Will is popular with the girls but they don't see him as boyfriend material and, at nearly 15, he's never had a girlfriend. When he sees a photo of Hannah, his step-mum's beautiful niece who wants to be an actress, he shows it to his friend and pretends she's his girlfriend. Will's reputation soars as he and his friend Barney work out details of her life and personality. But soon, to preserve Will's credibility, his girlfriend must put in an appearance. Barney needs her too to make his girlfriend jealous and the resulting complications lead to very unexpected results.