Koaru deeply loves his mother Mika, who raised him. Every night in his dreams, he repeatedly engages in sexual relations with Mika, each time intensifying his growing desire. One day, Koaru's friend Okita pins Mika down, and this incident shakes Mika's self-control. From that moment on, a forbidden relationship begins between mother and son. This shocking development forges a new, intense bond between Koaru and Mika.