Set over one summer, the film follows precocious six-year-old Moonee as she courts mischief and adventure with her ragtag playmates and bonds with her rebellious but caring mother, all while living in the shadows of Walt Disney World.

1930s Korea, in the period of Japanese occupation, a new girl (Sookee) is hired as a handmaiden to a Japanese heiress (Hideko) who lives a secluded life on a large countryside estate with her domineering Uncle (Kouzuki).