Effy has a dead end job as a receptionist for a leading London Hedge Fund. But as she stumbles across crucial financial information relating to a troubled deal and embarks on an affair with her wealthy boss, she finds out that she has bitten off more than she can chew. Her flatmate Naomi tries to stop Effy from ruining her life, but Effy cannot be reached; until tragedy strikes, which causes Emily to fly back from her job in New York.

Cassie, now aged 23 is adrift, alone and invisible in London, trying to make sense of her life. Slowly she realises that someone is following her. Cassie turns towards the unknown. A strange and poignant friendship is carved out of mutual loneliness, but can it survive exposure to the real world?