The future is divided by Perimeters: high-security gated communities where life goes on as normal. If you’re inside, you’re lucky. If you’re outside, life expectancy takes a nose dive.

Riley is fortunate to have been born on the right side of the fence. But her life of privilege comes crashing down when someone breaks through and murders her sister. She forsakes her own safety to go in search of the killer. Luc decides to go with her; otherwise, she’ll be dead before she’s past the security gate. But what awaits her outside is more unbelievable than she ever expected.

Cut to the present day, where Eleanor's world is falling apart. This time next year, civilisation won't be quite so civilised...