As the world recovers, Stephen and Celeste face a very modern nightmare, Daniel fights to keep hold of Viktor, and Edith finally returns home, carrying a terrible secret with her.

Daniel uses his birthday party to reveal a dangerous plan. And as Viv Rook rises to power, the Lyons gather for a funeral. But Celeste is left to fight alone as Bethany's obsession.

Daniel embarks on a dangerous quest to bring Viktor home, while Celeste takes a terrible revenge on Stephen. Viv sets her sights on the ultimate prize: 10 Downing Street.

Viv Rook becomes prime minister, and while Edith investigates mysterious rumours, Rosie finds herself trapped in the system.

Viv Rook tightens her grip, and the Lyons fight back. But can one ordinary family hope to change the world?