Yorimichi Kobayakawa is a boy who is not good at studying, but is a genius when it comes to playing. I've just moved to Tokyo, and I'm a first-year student at Akaguro Middle School, a prestigious school in the mountains. With his classmate Tsuyoshi Katsumata, who speaks the strange Osaka dialect, and Chie Asai, a tomboyish girl, they are active as a hideout in an old Western-style building with a vast garden! What kind of play are you waiting for today...!? Mitsuo Hashimoto's starting point, a school comedy that hasn't faded even now.