After watching a certain television program, Hirona suddenly decided to start a "Detective Group," forcibly making her childhood friend Mio as group member No.1 and a just happen to pass by Fuuka as group member No.2. With Fuuka inviting her friend Megumi as group member No.3 thus begins their adventure... or not.

A slice of life manga following the peaceful if eccentric life of main character Nakamura Hirona, Hikawa Mio, Yamamoto Fuuka, and Sawaki Megumi.