One winter's afternoon, Sonia, 43, married and respectable, answers the door to fifteen-year-old Jez. He's come to borrow some music. Sonia invites him in and soon decides that she isn't going to let him leave. As Sonia's desire to keep Jez hidden and protected from the outside world becomes all the more overpowering, she is haunted by memories of an intense teenage relationship, which gradually reveal a terrifying truth.