When Clooney Coyle promises Vonnie Gallagher they'll be friends for life, he has no idea what he's letting himself in for. The lonely and eccentric Vonnie quickly becomes obsessed with the kind-hearted but insecure actor, and her misguided crush soon develops into something much more sinister, which leaves Clooney's career in tatters.

But when fate takes a strange turn and elevates the pair into an overnight celebrity couple, Clooney must decide whether to embrace the fame he has longed for since childhood or end the ridiculous charade before Vonnie's jealous – and murderous – inclinations spiral out of control.