When out of work actress Rey Levine is offered her dream acting role, she knows she has to make it work. But there's a catch: the film calls for Rey to swim, something she hasn't done since her last fateful summer holiday 15 years ago. The summer her sister disappeared - and everyone blamed Rey. Rey will do anything to block out the painful memories, but it means her current life is in freefall - drink and men her drugs of choice. With her first dip in the cool water, Rey thinks she's found the perfect escape. But as the water holds her, old memories float to the surface, forcing Rey to remember the terrible summer she'd rather forget. But someone doesn't want the truth to surface. Not now, not ever. And they're prepared to ruin Rey's life all over again.