霊感ゼロ、性感100を自負する石橋栄太は、 校内で囁かれた幽霊騒動。 そして殺人騒動で････一人の女子に因果を仕込んでいた。 待ちに待った夏休み････いきなり新たなセフレゲットッ！ 嫁、星野みはる(自称)。セフレ三上奈々、 さらに不二清美まで加わる。 充実した性生活の中････夏の思い出作りに二泊三日で 海に遊びに行く事になる。 夏の海で待ち受ける、バカンス(？)の結末は････如何にッ！？

Eita suggests a camping trip during the upcoming holiday to improve sexual performance. Joined by his friend Mamoru, he convinces Miharu to participate, but the plan gets disrupted when Nana, the class representative who has feelings for Eita, forcefully tags along. Miharu is intimately involved with both Eita and Mamoru, driven by the purpose of improving their sexual skills. Nana, who was dragged into the trip, also ends up participating in the sexual enhancement camp. The story involves challenges, intimate moments between characters, and the development of relationships during the camping trip.