The story opens on the windswept island of Berk, where dragons descend on the Viking settlement day after day, carrying off sheep and ransacking livestock pens. Hiccup Horrendous Haddock III moves among the panicked villagers as they try to chase the beasts away, but he is awkward with a sword and ineffective in the traditional fighting methods. His father, Chief Stoick the Vast, rallies the warriors and scolds Hiccup for getting in the way during raids; Stoick expects his son to grow into a warrior who will help protect and lead the tribe. Hiccup instead spends his time inventing mechanical devices in Gobber the Belch's forge, trying to compensate for his small size and lack of combat skill with ingenuity.

During one attack Hiccup fires his homemade bolas launcher and apparently hits the most feared dragon of all, a Night Fury. The shot draws his attention away from the fleeing raiders, and a larger, more aggressive dragon pursues him until Stoick intervenes and drives it off. Believing he has killed the Night Fury, Hiccup follows bloodied tracks into the forest and finds the creature tangled in his own bolas in a rocky cove. He approaches with a knife poised to prove his worth, but when he meets the dragon's gaze he cannot bring himself to kill it. He unties the draped net and frees the dragon, who roars in Hiccup's face and flees into the trees. Hiccup returns home unnerved and determined to justify himself to his father and his village.

Stoick assembles Berk's fleet and prepares a full-scale expedition to locate and destroy the dragons' nest, believing that wiping out the source of the attacks will secure the island. At Gobber's suggestion Stoick enrolls Hiccup in the adolescents' dragon-training program--the Trial of Flame--so Hiccup can learn to fight dragons like the other youths. Hiccup stands in the class among Snotlout Jorgenson, Fishlegs Ingerman, the twins Ruffnut and Tuffnut Thorston, and Astrid Hofferson, the fiercest and most respected girl in the group and Hiccup's secret crush. His classmates mock him for his awkwardness as Gobber puts them through exercises against caged dragons: they confront a sluggish Gronckle, a sharp-beaked Deadly Nadder, and the two-headed Hideous Zippleback that spews gas and confuses their teams. The teens bungle the contests until Gobber ends the trials himself. Hiccup, feeling out of place and humiliated, slips away to the woods.

Hiccup returns to the cove and finds the Night Fury struggling to fly because its tail fin is jaggedly torn; the cut prevents it from stabilizing in the air. Hiccup approaches slowly with fish as an offering and notices that the dragon can retract its teeth; he names it Toothless. Over repeated secret visits Hiccup gains Toothless's trust, and Toothless allows him to touch his snout. Hiccup fashions a leather harness and crafts a prosthetic tail fin that he can manipulate while riding, so that when Toothless attempts flight the boy can steer him. The pair take their first awkward airborne sorties together; Hiccup pilots with a guide sheet he reads at first, but when that cheat-sheet blows away during a high ride Hiccup tosses it aside and trusts his instincts, and the two begin to fly with greater freedom.

Back in Berk, Stoick and the returning fleet nurse battered ships and report that their search has come up empty; the dragons' nest remains undiscovered. At the next Trial of Flame Hiccup starts to show unexpected skill: he uses the knowledge he has gained from observing Toothless to calm or subdue dragons without harming them. He discovers a deadened scent that makes a Gronckle sneeze itself into submission and a reflection trick that distracts a Terrible Terror; he provokes a Nadder into retreat by pressing on its known allergies. His classmates grow impressed--Snotlout brags, Fishlegs watches admiringly, the twins bicker about Hiccup's tactics--but Astrid grows suspicious of where his new competence comes from. Elder Gothi and other elders notice Hiccup's improvements and Stoick hears rumors of the boy excelling in training.

One afternoon Astrid follows Hiccup into the forest to confront him and discovers Toothless. Hiccup takes her on a secret flight to show that Toothless is harmless; during the ride Toothless leads them far from Berk and the two teenagers spy a remote island where dragons circle and deposit food at a cavern entrance. They glide closer and see a monstrous dragon queen at the mouth of a vast underground lair--the Red Death. Smaller dragons rush to feed the Red Death, and when one grubby Gronckle fails to satisfy the queen she suddenly scoops it into her cavernous maw and swallows it whole. Astrid, stunned by the sight of the Red Death feeding on one of its own, tells Hiccup they must inform the village; Hiccup, realizing that disclosure would doom Toothless, insists they keep the cavity's location secret. He is torn between protecting Toothless and doing what he thinks is right for Berk.

Stoick returns and orders that each youth must kill a dragon to pass their final exam. Hiccup is assigned the Monstrous Nightmare, a dragon that can wrap itself in flames. He plans instead to demonstrate to the tribe that dragons can be tamed and that killing them is unnecessary. In the arena Hiccup confronts the Monsterous Nightmare, intending to calm it in front of the crowd, but Stoick, anxious to see Hiccup prove himself as a killer, provokes the beast into a frenzy. The Monstrous Nightmare tears and runs amok in the training ring; Toothless, sensing Hiccup's danger, swoops in from hiding to protect him, launching toothless at the raging dragon and engaging it mid-fight. The other Vikings react by subduing and shackling Toothless rather than praising the dragon's intervention. In the confusion Hiccup blurts out that he found the dragons' nest and that Toothless can lead them there. Stoick, hearing that his son has been consorting with dragons and betrayed their cause, reacts with fury and publicly disowns Hiccup, telling him he is no longer his son and that Hiccup's place is not among the Vikings.

Humiliated and desperate, Hiccup wanders alone until Astrid finds him and, after a blunt talk, tells him that he did not betray anyone out of cowardice but because he sought a better way. Bolstered by Astrid's faith, Hiccup gathers his classmates--Snotlout, Fishlegs, Ruffnut, and Tuffnut--and frees the dragons that the village had captured for training. He fits them with gear and mounts them, and the five teenagers take to the sky, following Stoick's fleet toward the island Toothless had shown him. As Stoick's armada approaches the hidden island they see a rock formation with a huge cavern and break through its outer barriers with axes and battering weapons. The raiding Vikings cut open a section of the nest to reach the interior and have no time to realize they are opening a trap.

The Red Death awakens in a surge of fury. It unfurls its enormous wings, breathes torrents of annihilating fire, and sweeps its great head across the Viking ships. The monster incinerates several vessels outright, setting timbers ablaze and filling the bay with smoke and burning embers; flames lick the decks and the water steams where oil and fuel explode. One of the small supply ships is engulfed and sinks. The Vikings struggle to keep their craft afloat; warriors cling to splintering hulls while some ships capsize and founder under the Red Death's fury. The Red Death also kills smaller dragons that fail to feed it properly; in the chaos they witness another Gronckle torn from the skirmish and swallowed alive by the queen.

Hiccup and his ragged band of riders arrive as a diversion to draw the Red Death's attention from Stoick's fleet. They engage the queen with hit-and-run attacks to distract it, leaping around its flailing limbs and dodging arcs of vapor and flame. Hiccup uses Toothless as bait to pull the Red Death upward and away from the burning shoreline. Meanwhile Stoick fights to free captured dragons from sunken ships; in one wreck Hiccup slips into the water while attempting to release Toothless and is pulled under as his vessel breaks apart. Stoick dives into the turmoil and drags Hiccup and the regaining Toothless out of the water before they drown. Wet, coughing, and exhausted, father and son lock eyes; Stoick's anger collapses into remorse. He relents, acknowledges his error, and helps Hiccup get Toothless back into the sky.

High above the clouds Hiccup and Toothless lead the Red Death on a harrowing chase. Toothless darts, loops, and fires plasma-like blasts from his mouth to provoke the queen into opening its own maw. Hiccup flies even higher, climbing until the two dragons are silhouetted against the sun. The Red Death presses in with a cataclysmic jet of flame that threatens to engulf Toothless's prosthetic tail fin, searing leather and cords. Seeing the fin begin to burn away, Hiccup decides on a dangerous maneuver: he dives sharply toward the mountain flank, and when the Red Death follows he commands Toothless to fire straight into the queen's gaping mouth. Toothless unleashes a concentrated blast aimed inside the Red Death's throat and chest, where the internal tissues ignite. The queen's internal organs catch fire, causing it to convulse and lose control of flight. The Red Death noses into the side of the rocky peak and slams into the mountain with a massive explosion; its body ruptures and bursts into a blazing inferno that showers rocks and embers over the sea and coastline. During the explosion the Red Death's thrashing tail strikes Hiccup, knocking him from Toothless. He plunges toward the ground amidst flame and debris.

Toothless reacts instantly, diving past burning fragments and scooping Hiccup up in his jaws before he reaches the burning mountain slope. Toothless then carries him back toward the sea, beating his wings against the smoky wind until they reach the water's edge. When the flames die down the survivors onshore gather around the fallen pair. People search the wreckage for bodies and count their losses. The Red Death lies dead in ruins, its colossal carcass cooling among shattered rock; smaller dragons that the Red Death consumed earlier are gone, and the Red Death itself is destroyed by Toothless's internal strike and the subsequent crash into the cliff face.

Hiccup regains consciousness days later in Berk's infirmary. He discovers that his left foot is gone--severed or burned in the battle--and that Gobber has fashioned him a wooden prosthetic foot that fits into a leather boot. He meets Toothless, who now bears a replacement tail fin manufactured by Gobber, mounted to match Hiccup's control harness so the two can fly together again. Stoick stands in the doorway, guilt plain on his face, and approaches Hiccup with apology; he speaks quietly and reconciles with his son, acknowledging that Hiccup's way of thinking saved the tribe. The other villagers file in and look upon Hiccup with new respect, no longer regarding him as a liability but as a leader who helped end the dragon threat. Snotlout's father, Spitelout, finds his son and for the first time expresses pride at Snotlout's courage. Astrid comes forward, presses herself against Hiccup, and kisses him, starting the romantic relationship they had both been circling.

In the aftermath Gobber outfits Toothless with a refined prosthetic fin and updates Hiccup's harness design so Toothless can fly smoothly once more. The captured training dragons that Hiccup and the teenagers had freed are released to roam Berk, and villagers now live and work alongside dragons: some dragons herd sheep, some help pull loads, and others play with the children. Hiccup, hobbling but grinning, straps on his replacement foot and mounts Toothless; he leads Astrid and the other teens into the sky, and they streak over the island together, checking fences and laughing as they glide among the cloud banks.

The final scene shows Berk changed: smoke from burned ships has ceased, fields recover, and dragons circle peacefully above the rooftops. Hiccup narrates that while Berk remains a rough place to live, dragons now belong to the village as neighbors instead of enemies. The film closes on Hiccup and Toothless racing across the blue sky over Berk, joined by the other dragon riders, as the villagers look up and cheer at their new partnership. The Red Death lies dead on the island cliff, its threat ended; Hiccup wears his wooden prosthetic and rides on, the boy who once could not fit into his father's world now accepted by his tribe and flying at the head of a new era.

At the end of the 2025 live-action film How to Train Your Dragon, Hiccup and his dragon Toothless confront the massive dragon called the Red Death. In the climactic battle, Toothless kills the Red Death by firing a blast into its mouth, causing it to burn from the inside. Hiccup is injured, losing his left foot, but is rescued by Toothless. After the Red Death is defeated, the Vikings of Berk accept dragons as part of their community, leading to peaceful coexistence. Hiccup's father, Stoick, reconciles with him, and Astrid is established as a respected aspiring chief.

Now, a detailed scene-by-scene narration of the ending:

The Vikings, led by Stoick, arrive at the dragon nest on the island, intent on destroying it to end the dragon threat. Stoick orders the Vikings to break through the nest's walls with their weapons. As the walls are breached, the enormous Red Death dragon emerges, unleashing fiery blasts that incinerate the Viking ships. The Vikings are overwhelmed by the Red Death's power.

Meanwhile, Hiccup, who had been disowned by Stoick for breaking tradition and trying to protect dragons, gathers his friends--Fishlegs, Snotlout, Ruffnut, Tuffnut, and Astrid--and they take captive dragons to fly to the nest. Their goal is to rescue Toothless and distract the Red Death. The teens arrive just as the Red Death attacks, drawing its attention away from the Vikings.

In the chaos, Hiccup attempts to free Toothless, who is restrained. Stoick, witnessing his son's leadership and bravery, has a change of heart. He dives underwater to break Toothless free from his restraints, apologizing to Hiccup and acknowledging his son's wisdom. This marks a reconciliation between father and son.

Hiccup and Toothless then face the Red Death in the sky. Toothless fires a powerful blast into the Red Death's mouth, igniting it from within. The Red Death thrashes violently, and in the process, its tail strikes Hiccup, causing him to fall into the fireball explosion. Toothless rescues Hiccup from the flames, but Hiccup loses his left foot in the process.

With the Red Death defeated, the threat to Berk is neutralized. The Vikings recover and begin to integrate dragons into their society, no longer viewing them as enemies. Astrid, who had initially been skeptical of Hiccup, is shown as an aspiring chief, earning respect from the community and deepening her relationship with Hiccup. Stoick supports this new era of peace and cooperation between Vikings and dragons.

The main characters' fates at the story's end are:

• Hiccup: Survives but loses his left foot; becomes a leader who bridges the gap between Vikings and dragons.
• Toothless: Remains Hiccup's loyal dragon companion, instrumental in defeating the Red Death.
• Stoick: Reconciles with Hiccup, supports the new peaceful coexistence.
• Astrid: Gains respect as an aspiring chief and partner to Hiccup.
• Other teens (Fishlegs, Snotlout, Ruffnut, Tuffnut): Participate in the rescue and fight, supporting the new alliance.

This ending closely follows the original animated film's conclusion but adds more dramatic weight through live-action presentation and deeper character development, especially for Astrid and Snotlout.

In the 2025 live-action film How to Train Your Dragon, no main characters die during the story. The plot involves intense conflicts between Vikings and dragons, including battles with a dragon overlord called the Red Death, but all key characters survive.

Specifically:

• Toothless, the Night Fury dragon, is severely injured, losing half of his tail fin and later a foot during the final battle, but he survives with a prosthetic replacement.

• Hiccup is also injured but survives the conflict with the Red Death.

• There is a mention in the live-action film that Valka, Hiccup's mother, was likely killed in a dragon attack, which adds a tragic backstory motivating Stoick and Hiccup. However, this is presented as a past event rather than a death occurring during the film's main timeline.

No other characters are reported to die in the 2025 film. The story ends with humans and dragons making peace and coexisting.

Thus, the only confirmed death referenced is Valka's, which is part of the backstory and not shown on screen. All other main characters, including Hiccup, Stoick, Astrid, and Toothless, survive the events of the film.

Yes, the 2025 live-action movie How to Train Your Dragon has a post-credit scene. It is a brief, quiet moment that appears right after the full credits finish rolling. In this scene, Hiccup opens his journal to a sketch of Toothless, the Night Fury dragon, with the Book of Dragons resting on the table nearby. The pages of the book remain open to the Night Fury section, the same page Hiccup was reading earlier in the film. Hiccup seems poised to add a drawing of Toothless into the Book of Dragons, but the scene ends before this happens. There is no dialogue or action beyond this simple, symbolic gesture.

This post-credit scene serves as a heartfelt tribute to the bond between Hiccup and Toothless, providing emotional closure rather than teasing the upcoming sequel. It connects to the story's themes and the legacy of their friendship, rather than revealing new plot details or future conflicts. The scene is subtle and quiet, emphasizing the importance of their relationship and the significance of the Book of Dragons in their world.

In summary, the post-credit scene is a short, silent moment showing Hiccup with his sketchbook and the Book of Dragons, highlighting the enduring connection between him and Toothless without explicit sequel setup.

Hiccup initially shoots down a rare Night Fury dragon but then finds it wounded and unable to fly properly. Instead of killing it, he releases it and the dragon spares his life. Hiccup befriends the dragon, names him Toothless, and builds a harness and prosthetic tail fin to help Toothless fly again. Their friendship becomes key to bridging the gap between Vikings and dragons.

Stoick, the Viking chieftain and Hiccup's father, expects Hiccup to act like a traditional Viking and trains him to fight dragons. He leads a fleet to find and destroy the dragons' nest. Stoick initially does not accept Hiccup's reluctance to fight dragons and even muzzles and chains Toothless to force it to reveal the nest location. However, by the end, Stoick and Hiccup work together to rescue Toothless and fight the dragon overlord.

The Trial of Flame is a dragon-fighting training course where recruits learn to fight five main types of dragons kept in an arena. The best recruit earns the title of Top Slayer and the honor of killing their first dragon publicly. Hiccup reluctantly joins and struggles but is eventually picked as the top dragon slayer over Astrid, surprising others. However, he refuses to kill a massive dragon in the arena and instead tries to befriend it.

Hiccup trains alongside other Viking teens including Astrid Hofferson, Snotlout Jorgenson, Fishlegs Ingerman, and the Thorston twins, Ruffnut and Tuffnut. Gobber the Belch, a local blacksmith and Hiccup's mentor, instructs them in dragon fighting. Astrid is both a rival and Hiccup's crush, initially skeptical of his methods.

The Red Death is the dragon overlord controlling other dragons, demanding sacrifices. When the Vikings find the dragon nest, they encounter the Red Death and face a dire situation. Hiccup, Astrid, and their classmates free captive dragons and ride them to fight the Red Death. The battle results in Toothless losing a foot but ultimately leads to peace between dragons and humans.

The 2025 live-action movie How to Train Your Dragon is generally family-friendly and rated PG, but it contains some mild violence and intense scenes that might be upsetting for very young or sensitive children.

Potentially objectionable or upsetting aspects include:

• Scenes of fantasy violence such as dragons breathing fire, people being thrown or stomped on by dragons, and fights involving swords, axes, knives, arrows, and hammers. Some moments are more visceral due to the live-action format compared to the original animated version.
• A few moments of intense peril and dragon encounters that could be frightening for young children.
• Mild verbal conflict and teasing among teens, including threats like "If we survive, I'm going to kill you," though no serious harm is shown.
• A scene involving a village elder consulting bones for a spiritual reading, which might feel unusual or unsettling to some.
• Brief romantic moments with two people kissing near the end, but nothing explicit.
• No sexual content, nudity, profanity, or drug/alcohol use.

Overall, the film maintains a tone similar to the original but with a grittier, more realistic look that may make the action feel more intense. Parents of sensitive or very young children should be aware of the more realistic violence and some tense moments.