The story tells that Becky Green has been following Chloe Fairbourne on social platforms for some time, watching her share all kinds of perfect life photos. Chloe has a charming life, a husband who loves her, and a group of successful and available friends. Such a life in sharp contrast to her own situation makes Becky always unable to help but pay attention. Becky's mother suffers from early-onset dementia, and she has been taking care of her mother in a small apartment by the sea in the suburbs of Bristol. When Chloe suddenly died, Becky forged a new identity to sneak into the enviable life of Chloe's close friend, trying to find out what happened to Chloe.