A man is jealous of his best friend living with a beautiful girlfriend and seems to be happy, so he invades the apartment where they live. Taking advantage of her weakness, he begins a life where he puts her under house arrest for three days while her boyfriend is on a business trip and rapes her whenever and however he wants. She was reluctant at first, but he gradually trained her to have rough sex with his big dick, and eventually she was forced to keep his dick in her vagina even when her boyfriend came home.