Mark Gatiss's adaptation of HG Wells's science fiction classic. July 1969, and as the world waits with bated breath for the Apollo astronauts to land on the Moon, a young boy meets 90-year-old Julius Bedford. He's a man with an extraordinary story of how, way back in 1909, he got to the Moon first, and, together with the eccentric Professor Cavor, discovered a terrifying secret deep beneath its seemingly-barren surface.

Jamie and Lucy have an encounter with what appears to be a pair of ghost children. But these spooky kids, Sara and Georgie, aren’t actually ghosts. They’ve travelled forwards in time to seek help, believing they’re going to be murdered by the wicked Mr and Mrs Wickens. And Lucy and Jamie’s strange visitor seems to be the key to it all. With his help, they must travel back to 1821 to save Sara and Georgie and redeem their remorseful new friend – The Amazing Mr Blunden.

Brainy Roman teenager Atti is always coming up with schemes, but one ultimately goes too far, angering Emperor Nero. As punishment, the lad is exiled to the cold wet province of Roman Britain on the fringe of the Roman Empire. Whilst there, Atti is captured by—and eventually befriends—Orla, a feisty Celt. When he's returned to his regiment, he's horrified to find himself pitted against Orla and her tribe at the Boudican revolt's Battle of Watling Street.

The Brockman family are on a special mission at Christmas time.