A perverted dentist and his assistant like to combine business with pleasure. They drug their pretty looking patients and then sexually abuse them in various ways. The dentist then becomes obsessed with a busty patient and her lesbian lover. He decides to give them the full treatment to the accompaniment of classical music.
Hairstylist Misa meets S&M enthusiast Ippei and is convinced to give it a try. Then later, Ippei's ex-wife, who happens to be one of Misa's beauty shop clients, begins a sexual relationship with her. The lesbian affair is also accentuated by some more S&M.
A man on the run from the police takes two sisters hostage in their dental office apartment. He makes himself at home sexually abusing them and getting food service. But the sisters are resilient and quietly develop a plan for revenge.
