Lonely Becky spends her life on Chloe's social media, always on the outside looking in, until a sudden tragedy pulls her in deeper than she ever dreamed possible.

Armed with her new alter ego Sasha, Becky makes herself indispensable to Livia. A party in Elliot's honour gives her the chance to get closer to Chloe's grief-stricken husband.

Becky begins investigating the secrets which Chloe kept from Elliot, Livia and the rest of the friends but an unexpected run-in with Richard leads to a painful conclusion for her.

Becky watches Chloe's life through social media. When she dies suddenly Becky assumes a new identity and infiltrates the enviable lives of Chloe's closest friends to find out why.

New information causes Becky to look at everything with fresh eyes as she tries to untangle the threads Chloe left behind, while increasingly at risk of being discovered.