One night in 2019, politician Vivienne Rook causes a scandal on live TV. At the same time, the Lyons family is united, as Rosie gives birth to a son.

Cast: Emma Thompson, Russell Tovey, Rory Kinnear, Jessica Hynes, Anne Reid, Alexander Armstrong, Maxim Baldry, Dino Fetscher, Ruth Madeley, Sharon Duncan-Brewster, Julie Peasgood, Tina Louise Owens, T'Nia Miller, Paul Merton, Jade Alleyne