Having just entered high school, Koharu Tanaka starts looking for a club to join. However, she least expects to be dragged into the activities of the so-called "Groping Club." Despite its name, the club is surprisingly normal—their aim is to "grope" for new ideas, as well as new types of clubs and activities they might participate in, even if the results often turn out bizarre. As the months pass and various ideas are considered, Koharu discovers the most valuable thing clubs can offer: lifelong friendship.