The colors practice to raise their levels, take on the case of the mysteriously closed streets, and save humanity from an eco-terrorist plot.

Nonoka tries to protect her family's bakery from her older sister Momoka, who wants to turn into an onigiri shop when she inherits it, but fails to make an argument with her quality of bread. Later, Yui participates in a street parade before joining the others in going to a summer festival at her school.

Yui and Kotoha have an awkward conversation while waiting for Sat-chan to arrive, after which the girls go around collecting trash. Later, the girls investigate a peculiar smell and wind up collecting stinky gingko nuts. With the arrival of Halloween, the Colors decide to play a Zombie Game in which Yui must prevent Kotoha and Sat-chan from filling the park with zombies.

The Colors acquire money but they don't know what to spend it on. They later go on a mission to find the perfect place for their time capsule.

The Colors have a training day with an intense game of hide-and-seek! Sat-chan, as usual, takes it up a notch...