Elena and Stuart Roberts are struggling. Their newborn baby, Olive, has colic and neither of them have managed to sleep for more than three hours a night for the last month. Something is about to break. Stuart decides enough is enough. They need help.

And help presents itself in the form of More You, a company which offers a clone of you. For a substantial fee. But a clone of Elena might be the answer to all their problems; someone to be up all night, someone who Olive won’t reject. Whilst Elena is hesitant, Stu can’t resist the lure of sleep and the return of some normality to his life, and so a week later they are bringing their new addition to the family home.

Elena’s clone settles in well, bringing balance and assistance where needed. And as the weeks progress, she begins to mimic Elena, adopting her habits, her mannerisms. Something which More You insists is all a part of the adaptation process.

But Elena isn’t so sure. And soon neither is Stu. They are both starting to live in fear of the stranger in their home. And when one night, the clone's presence leads to a terrible mistake, Elena must make a decision which will change her life forever.