Ten years ago, Jo Martin was released from prison after serving 12 years of a life sentence. She is now out on license - and she isn’t Jo anymore. Given a new identity by the courts, and with a different appearance, a ready-made history and even a change of age, Jo can pretend to be anyone....

Welcome to HMP Ashcroft. Run by a bent governor determined to impose his will with an iron fist, it might as well be hell for its inmates. Fights and favours are currency for survival, but nothing in life is free; there’s always a price to be paid, and for some it’s high. Whether serving time on the inside or outside, guilty or not, one thing is for certain: hell hath no fury like a woman scorned.

Georgie Deacon thinks nothing of it when a gang of girls led by Yasmin, a member of the notorious Marx family, knock at her door and threaten to hurt her daughter—that is until her daughter doesn't return home. Detective Clark Kims ignores Georgie's plea to have the gang of girls brought in for questioning. He insists it is the work of the Kent serial killer, until Georgie realizes that the detective's daughter is part of the gang.

Jane, Carly and Rose Savage are savage by name, savage by nature. Having lost their mum too young, and with a bedridden father too ill to work, the sisters learnt early to stand on their own two feet. The family's flat in the rough streets of Glasgow's Haghill is their fortress, but when Carly's ex-boyfriend Cole Alexander is released from prison, trouble soon comes knocking at their door. The Alexanders have beef with the Savages, so the girls call for back up in the shape of their uncle Eddie and his two gorgeous but dangerous sons, Harry and Dean.

After the brutal gangland murder of her husband Terry, Tracey Tempest just wants to move on. She’ll never get over Terry’s betrayal, but she’s determined his shady past won’t spoil life for her and her beloved boys Ricky and Jamie. Max Hardcastle just wants a quiet life and to maybe see how things go between him and Tracey. He knows she’s been hurt in the past, but he’s nothing like Terry and he’ll do anything to keep Tracey happy and safe. But some people have other ideas.