Yurika is a single mother who has been working as a nurse and raising her son Daichi. The mother and son have been living a comfortable life together. However, those days came to an end when Yurika introduced her girlfriend to Daichi! Since then, Daichi, perhaps out of jealousy, has begun to show an abnormal obsession with Yurika. He attacks his mother, who is seeking happiness as a woman, saying, "I'll give you happiness!" He plays with Yurika's body as she sleeps in her nurse uniform, and makes her squirt many times with his dick that rivals that of an adult. Yurika's reason is eventually destroyed, and she becomes addicted to immoral acts with her son...