Lily is always moving house. She had been since she was six, and her parents split her, her Mum marrying a TV chef called Harriet. Lily hasn't seen her twin, Lucy, or her father for years. Everything is as normal as it ever is around her - until she moves for the last time and finds a forest in the Cupboard under her sink.
The forest, or Cupboard Narnia as Lily calls it, is the perfect place for getting her memories back - memories she blocked out after her parents' split.
When Lily's father, hateful stepmother and twin come to stay, can Lily forget the Cupboard and piece her life back together? Or will she become so addicted that it slowly consumes her?