Mama, eager to find a girlfriend for her son, takes Susan, a beautiful young woman from a supermarket parking lot, bringing her home as a potential match.

Susan wakes up in a basement, terrified and confused, as Mama examines her to make sure she’s the right choice for her son. The girl’s nightmare begins.

Despite Susan’s protests, Mama is convinced that she and her son will make a "lovely couple" and begins manipulating her into accepting her new role.

Mama takes it upon herself to give the young couple "pre-marital lessons," forcing Susan into increasingly disturbing and humiliating situations with her son.

Susan is trapped in a twisted scenario where Mama controls every aspect of her life, and her only hope for survival is finding a way to escape her new "family."