A man who is jealous of his best friend's happiness living with his beautiful girlfriend breaks into the apartment where they live. Taking advantage of her weakness, he holds her captive for three days while her boyfriend is away on a business trip, and begins a life of raping her whenever and however he wants. Although she is reluctant at first, she gradually becomes trained by his big dick and rough sex, and eventually she is moaning with his dick in her vagina even when her boyfriend comes home...