The story tells that Becky Green has been following Chloe Fairbourne on social platforms for some time, watching each other share all kinds of perfect life photos. Chloe has a fascinating life, a husband who loves her, and a group of accomplished and on-call friends. Such a life in sharp contrast to his own situation, so that Becky can not help but pay attention to. Becky, whose mother suffers from early-onset dementia, has been taking care of her in a small seaside apartment on the outskirts of Bristol. When Chloe dies suddenly, Becky falsifies a new identity to sneak into the enviable life of a close friend of Chloe, trying to find out what happened to Chloe.