Elementary school girls Yui, Sat-chan, and Kotoha form a clandestine peacekeeping group called the Colors and decide to track down a stray cat; the Colors attempt to eliminate Saito using a rocket launcher.

Sat-chan and Kotoha run off on an errand during a game of hide-and-seek; the girls investigate the reason behind an alleyway closure; a high school student explains to the girls how to keep the pond clean.

The Colors help sell bananas for Sat-chan's mother; the Colors must defuse a bomb.

Nonoka takes action when her older sister plans to retool their family's bakery into an onigiri shop; Yui joins a parade and attends her school's summer festival.

The Colors play with a box of old toys; the Colors investigate the treatment of animals at the zoo.

The Colors look for edible plants; the Colors examine their biggest weaknesses; the Colors take photographs to establish a legacy for themselves.