Bailey Alice Wilde has joined a new school, she has a terrible time and nobody likes her, and Katherine Golden sees to it. Bailey and Katherine, both secretly struggling with only one parent, have much more in common than you think. Baileys mum, Agent Cara Wilde, works in the MI6 SIS as an undercover spy. Children start disappearing in a manner of strange places, Cara tries to find the meaning behind them. When an attack is set up at the local pool, Bailey finds herself rescuing Katherine, from likely death. Then the most unlikely of events happens. Katherine's Mother disappears. Katherine and Bailey work together to try and find out where everyone is going. In the bedroom of Katherine's mum they ind something, something that could change everything.