One summer day, a group of sixth-grade boys have an argument about whether fireworks are round or flat when viewed from different angles and embark on a journey for the answer during the annual firework festival. Meanwhile, one of their classmates, Nazuna, is troubled by her parents' separation and decides to choose one of the boys to run away with.
Junk Food consists of four intertwining stories. The first and fourth sections show the morning routine of an blind, old Japanese woman, waking up, buying bread and milk, praying at the family alter; however, it is the second segment where the true story begins.
