The episode begins with Bart Simpson in school, where he is being punished for his misbehavior. As a part of his punishment, he is made to write "I will not yell 'fire' in a crowded classroom" on the blackboard. While he is writing, he overhears a classmate talking about Australia, which piques his interest. Bart becomes fascinated with the idea of Australia, particularly after hearing about its unique wildlife and culture.

Later, Bart decides to prank his teacher, Mrs. Krabappel, by sending a fake letter to Australia, claiming that he is a "dingo" and that he wants to visit. The letter is sent off, and Bart feels a sense of excitement about the potential chaos that could ensue. However, he does not anticipate the consequences of his actions.

The next scene shows the Simpson family at home, where they receive a response from Australia. The letter is addressed to Bart and is filled with humorous and exaggerated claims about Australian culture. Bart is thrilled and shows the letter to his family, who are amused by the contents. However, Marge is concerned about the implications of Bart's prank and the potential for trouble.

As the story progresses, Bart's prank leads to a series of misunderstandings. The Australian government, believing Bart's letter to be a serious inquiry, invites him to visit Australia as a representative of the United States. Bart is ecstatic about the opportunity and convinces his family to let him go. Homer and Marge reluctantly agree, seeing it as a chance for Bart to learn about a different culture.

Upon arriving in Australia, Bart is greeted with a warm welcome from the locals, who are eager to show him their way of life. However, things take a turn when Bart's antics begin to annoy the Australians. He engages in various pranks and mischief, which leads to a growing tension between him and the locals. Bart's carefree attitude clashes with the more laid-back Australian culture, resulting in a series of comedic misunderstandings.

As Bart continues to explore Australia, he finds himself in increasingly absurd situations. He encounters kangaroos, learns about Australian slang, and participates in local customs, all while maintaining his mischievous demeanor. However, his behavior eventually leads to a confrontation with a group of Australians who are fed up with his antics.

In a pivotal moment, Bart is challenged to a duel by an Australian boy named "Dingo." The duel is set to take place in front of a crowd, and Bart feels the pressure mounting. He is torn between his desire to maintain his reputation as a prankster and the realization that he may have gone too far. The duel itself is a chaotic affair, filled with slapstick humor and exaggerated physical comedy.

As the duel unfolds, Bart's internal conflict becomes evident. He grapples with the consequences of his actions and the impact they have had on his relationships with the Australians. Ultimately, Bart manages to turn the situation around by using his wit and charm to diffuse the tension. He wins over the crowd and earns their respect, showcasing his ability to adapt to the new environment.

The episode concludes with Bart returning home to Springfield, where he reflects on his experiences in Australia. He shares stories of his adventures with his family, who are both amused and relieved to have him back. Bart's journey serves as a reminder of the importance of understanding different cultures and the consequences of one's actions, even if it is presented in a humorous and exaggerated manner.

In the ending of "Bart vs. Australia," Bart's prank leads to a series of misunderstandings that culminate in a confrontation with Australian authorities. After a series of comedic events, Bart learns a lesson about responsibility and the consequences of his actions. The episode concludes with Bart and his family returning home, having navigated the chaos caused by his antics.

As the episode nears its conclusion, we find ourselves in a tense scene at the Australian embassy. Bart, having been caught in a web of his own making, faces the consequences of his prank call to Australia, where he pretended to be a representative of the United States. The Australian officials, led by a stern ambassador, are not amused by Bart's antics. They demand an apology, and Bart, feeling the weight of his actions, reluctantly agrees to make amends.

The scene shifts to the Simpson family, who are anxiously waiting for Bart to return home. Marge is worried, and Homer is trying to maintain a sense of calm, though he is clearly concerned about the trouble Bart has caused. Lisa, ever the voice of reason, expresses her disappointment in Bart's behavior, highlighting the rift that has formed between them due to his reckless actions.

Back at the embassy, Bart stands before the Australian ambassador, who is unimpressed with Bart's attempts at humor. The ambassador delivers a stern lecture about the importance of respect and understanding between nations. Bart, feeling the pressure, finally delivers a heartfelt apology, acknowledging that his prank was thoughtless and that he has learned a valuable lesson about the impact of his actions.

As the episode wraps up, we see Bart returning home, where he is greeted by his family. There is a sense of relief in the air, but also a lingering tension as Marge and Homer express their disappointment. Bart, now more aware of the consequences of his actions, promises to be more responsible in the future. The family shares a moment of reconciliation, though it is clear that Bart's journey toward maturity is just beginning.

In the final moments, the episode closes with a humorous twist, as Bart's prank inadvertently leads to a misunderstanding that leaves the Australian ambassador in a comical situation. This light-hearted ending serves to remind viewers of the importance of family, responsibility, and the sometimes chaotic nature of life, especially for a mischievous child like Bart. The episode concludes with the Simpson family united, albeit with Bart still holding onto his mischievous spirit, hinting at future adventures and misadventures to come.

In the episode "Bart vs. Australia," there is no post-credit scene. The episode concludes with the main storyline wrapping up, focusing on Bart's misadventures after he makes a prank call to Australia, leading to a series of humorous and chaotic events. The episode ends without any additional scenes or content after the credits roll.

Bart pulls a prank by making a collect call to Australia, claiming to be a famous Australian celebrity. This prank leads to a series of misunderstandings and ultimately escalates into a diplomatic incident.

Bart's prank causes the Simpson family to be embroiled in an international incident, leading to the Australian government sending a representative to confront them, which creates tension and embarrassment for the family.

The kangaroo is significant as it symbolizes Australian culture and serves as a comedic element when Bart is confronted by an Australian official who uses a kangaroo to demonstrate the absurdity of Bart's actions.

Homer initially finds the situation amusing but becomes increasingly frustrated and worried as the consequences of Bart's prank escalate, especially when they are visited by the Australian official.

By the end of the episode, Bart learns about the repercussions of his actions and the importance of taking responsibility for his pranks, as he faces the consequences of his behavior on an international scale.

In "Bart vs. Australia," there are a few scenes and aspects that might be considered objectionable or upsetting for children or sensitive viewers:

1. Prank Calls: Bart engages in prank calling, which could be seen as promoting mischievous behavior. The consequences of his actions lead to a significant misunderstanding.

2. Cultural Stereotypes: The episode features exaggerated portrayals of Australian culture and accents, which may not sit well with some viewers who find such representations offensive or reductive.

3. Conflict and Consequences: The episode includes scenes of conflict, particularly between Bart and the Australian authorities, which may be intense for younger viewers.

4. Emotional Distress: There are moments where characters experience embarrassment or distress, particularly Bart, which could resonate with sensitive viewers.

5. Physical Comedy: Some scenes involve slapstick humor that may be perceived as violent or inappropriate, depending on the viewer's perspective.

Overall, while the episode is comedic and intended for a family audience, these elements may warrant consideration for younger or more sensitive viewers.