The life of a successful radiologist spirals out of control when she sees the spitting image of herself driving down a London street. While attempting to uncover who the imposter could be, she stumbles into a terrifying mystery that her family and closest friends are somehow involved in, leaving her with no one to trust.

After a painful breakup, Ben develops insomnia. To kill time, he starts working the late night shift at the local supermarket, where his artistic imagination runs wild.