After watching a certain television program, Hirona suddenly decided to start a "Detective Group", forcibly making her chilhood friend Mio as group member 1 and a just happen to pass by Fuuka as group member 2. With Fuuka inviting her friend Megumi as group member 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.