During the Hallasand cookie hunt at Woori World, Lily and Jack face chaotic competition as manic customers trash the shop trying to find the limited cookies. Lily is cornered by a 'three-aunt hydra,' Jack acts as a decoy to help the family, and Halmoni battles a rival of her age. Jack ultimately saves Lily and secures the final box of Hallasand cookies for the family.

Jack initially is seen as an outsider and not fully part of the family, which causes some hesitation about his participation in the Hallasand hunt. However, during the chaos at Woori World, Jack proves himself by acting as a decoy, saving Lily, and securing the last box of cookies. Halmoni defends him against a rival's claim that he should be disqualified for not being a family member, reinforcing his acceptance into the Wylde-Pak family.

The Hallasand cookies are highly sought-after, rare imported cookies from Jeju Island that arrive in limited stock at Woori World. They are so coveted that the market only receives five boxes, and families compete fiercely to obtain one. The hunt for these cookies drives the episode's main plot and family dynamics.

Halmoni actively participates in the cookie hunt and is locked in a battle with a rival of her age during the chaos. She also defends Jack when a rival calls for the Wylde-Paks' disqualification, asserting Jack's place in the family and the competition.

The episode showcases playful banter, sibling rivalry, and cultural references as the family navigates the cookie hunt. While the family initially hesitates to fully include Jack, the events at Woori World bring them closer together, with Jack proving his loyalty and bravery. The family works as a team amid the chaos, highlighting their evolving relationships.