Yoko Nishikawa is a former rich girl struggling to understand her new reduced circumstances. The loneliness is getting to be too much when carefree glutton Futaba Odagiri and scary class rep No-First-Name Hayama crash into her life and change everything.

Yoko, Futaba, and Hayama learn more about each other as they continue to eat lunch together. They encounter a rival, a sibling, and cats. All the while,Yoko is deciding whether Hayama is kind-hearted or black-hearted.

Hayama goes to a cat cafe with her sister and sees Nishiyama there! Futaba has a free ticket for the petting zoo. Then, Futaba wants to start up a band.