Ayaka and Uta are rival dominatrices. Uta is tall with a boyish appearance, but deep down she's delicate and highly sensitive. Ayaka, on the other hand, is a long-haired beauty with a fiery personality who snaps back in Kansai dialect when provoked. The two become entangled in an incident and are kidnapped. They are then confronted by mysterious men who bind them both in M-shaped restraints and subject them to intense pleasure torture. Forced to climax and even involuntarily urinate in front of her rival, Uta loses control. Ayaka also spirals into frenzy at the scene. But then, a new turn of events unfolds. The vengeful dominatrices now unleash a brutal, cruel tragedy.