Shinnosuke is a famous baseball player. Due to a scandal, he has been temporarily suspended from competition. On this occasion, Shinnosuke returns to his hometown after a long time away. His parents are overjoyed to welcome him, encouraging and supporting him, which helps Shinnosuke's mood improve somewhat. However, there is really nothing to do in the countryside; all day he can only lie down and sleep in the oppressive heat of summer. At this moment, Shinnosuke meets Tsubasa, the wife of the neighbor next door. Tsubasa is a kind, beautiful woman with large breasts and no bra, making it hard for Shinnosuke to take his eyes off her! And notably, Tsubasa is not satisfied sexually! She has also heard rumors about Shinnosuke's scandal and, after learning that he has a very strong sexual desire and is quite skilled, Tsubasa starts to seduce him, inviting him to be with her. Unable to resist a beautiful girl like Tsubasa, even knowing it's wrong, Shinnosuke immerses himself in her body. When the parents are away, even when Tsubasa's parents and husband are sleeping next to each other, the two of them still seek each other out, satisfying each other's sexual desires, dispelling the boredom and heat of this countryside...