Victoria Sin is a prostitute who walks the streets of San Francisco. She gets picked up by a rich and powerful women, Sandra Romain. A high price for sex is negotiated but Victoria is unaware of the perverted events that will follow. Back at Sandras fortress, the hooker is taken by force and used in a dark chamber. A sex hungry gimp girl, Kelly Wells, is let out of her cage to feast on this helplessly bound and gagged street whore. Both girls are punished and ass fucked by the evil mistress.