Louise gets a frantic call to take in a damaged and destructive young girl. Separated from her siblings, Sparkle is hostile and angry. A short while after settling in, Sparkle begins to identify as pansexual. A revolution is underway in the Allen household, with Sparkle's transition motivating all of the young people to explore what becoming an adult means for them. But it's Sparkle's escalating behaviour that causes concern. Discovering a dark fact about Sparkle's birth and the shocking events that the children in her house were part of, Louise is desperate for more help - and not just for the child in her care. As Sparkle's erratic and violent behaviour increases, Louise finds herself and her homelife under serious threat.