A seventeen-year-old London girl flies to Los Angeles for the funeral of her mother Lily, from whom she had been separated in her childhood. After stealing a suitcase of letters, clothes and photographs from her mum's bedroom at the top of a hotel on Venice Beach, the girl spends her summer travelling around Los Angeles returning love letters and photographs to the men who had known her mother. As she discovers more about Mandy's past and tries to re-enact her life, she comes to question the foundations of her own personality.