Charlotte has it all: the successful career, the loving family. But, secretly, she is dangerously bored of her life. So when she meets free-spirited Bianka, it feels like fate – Bianka is exactly the person that Charlotte needs. On a girls' trip to Ibiza, home is forgotten as Charlotte dives head first into a life that is looser, wilder. She feels free, but there are devastating consequences: someone doesn't return home. As the aftermath of the holiday rips through her life back in London, Charlotte soon regrets ever breaking out of her carefully constructed routine – and begins to wonder whether meeting Bianka was really an accident at all ...