Jack and Lily are half-siblings living on opposite ends of the world — until Jack shows up on Lily's doorstep for the summer. Their arguing sends the family's new grooming trailer careening through town and they must save their family's livelihood and Halmoni, who is stuck inside.

Lily and Jack embark on the epic quest of navigating their local Asian market, Woori World, competing to find a highly coveted box of imported Hallasand cookies.