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.

The Lyons family gather in 2019, unaware that their future holds many surprises. Absent sister Edith brings news from abroad that will change their lives forever.