When robots from outer space kidnap nurse Belinda Chandra, the Doctor embarks on an epic intergalactic quest to get his new friend back home to Earth.

Cast: Ncuti Gatwa, Varada Sethu, Anita Dobson, Evelyn Miller, Jonny Green, Max Parker, Thalía Dudek, Jeffin Kunjumon, Belinda Owusu, Tom Storey, Stephen Love, Robert Strange