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.

Christie Doyle is living the dream: she has a beautiful mansion on the South Downs with an infinity pool and stables, and her husband, Kenny, spoils her rotten. It's her birthday and she is the centre of the most amazing party. And then the bombshell drops. Kenny confesses to an affair and asks for a divorce. Worse is to come when the 'other woman' - Lara, nineteen years old and pregnant with Kenny's child - is found dead. Suspicion falls on Christie and the Doyles' life is ripped apart as the police hunt for evidence.

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.

Gangs rule the streets of the rough Gallowburn Estate in Glasgow, but the deepest rivalry of all is between Jamie Gray and his friends, known as the Blood Brothers, and their enemies, the Lawsons. The two gangs clash frequently, but when a phone containing incriminating evidence disappears after a particularly brutal run-in, the stakes are higher than ever. Jamie’s mother Jackie is as hard as nails and is not going to let anyone hurt her boy – even if she has to roll up her sleeves and get stuck in.

When Amy Osbourne’s parents are lost at sea, she is forced to leave her London home and is sent to live with her aunt and uncle at the opposite end of the country. Alardyce House is depressing and dreary, her aunt haughty and cruel. Amy strikes up a friendship with her cousin Edward but his older brother Henry is just as conceited as his mother, and a mutual loathing develops between him and Amy. Struggling in this strange, unwelcoming environment, Amy begins to suspect that something isn’t right at Alardyce House.