Cahe Detective Club is set at Tsubamegaoka Private Academy, a prestigious all-girls high school located on the edge of the city. Famous for its freedom-loving atmosphere, the academy boasts a wide range of clubs — from traditional activities to some of the most bizarre student-created organizations imaginable.

The school allows students to freely establish new clubs, attracting many girls who dream of creating something uniquely their own. However, when five different students each apply to form a new club and only one slot is available, their ambitions collide in spectacular fashion.

Instead of competing, the five girls are forced to unite — giving birth to the unconventional and unpredictable Cahe Detective Club. What begins as a compromise soon turns into a whirlwind of mystery, comedy, and chaos.

Join these five energetic heroines as they investigate strange incidents, uncover hidden secrets, and experience hilarious daily life moments while running the most eccentric club on campus. Cahe Detective Club delivers a fun-filled school comedy packed with friendship, mystery, and nonstop laughs.