After being fired from his job and kicked out of his house, Hiroyuki, a young man, ends up staying with his older brother and his wife until he finds a new job. However, he has no place in their house either, and his brother yells at him every day, saying, "You're a pathetic man for still being a virgin at 30." Wanting to gain some confidence, Hiroyuki makes a lifelong wish to his brother's wife, Ai, to take his virginity. Ai sympathizes with Hiroyuki and allows her body to touch him for a little while, but the moment she penetrates him, she is hit with a tingling pleasure...