The Doctor and Mel go for a holiday trip to Shangri-La aboard a Nostalgia Tours bus, only to get dragged into the battle against genocide of their fellow passenger Delta, a Chimeron Queen fleeing from the Bannermen who wish to make her species extinct.

Cast:Sylvester McCoy, Bonnie Langford, Don Henderson, Belinda Mayne, Stubby Kaye, Morgan Deare,

Genre:Science Fiction, Drama, Adventure,

country:United Kingdom,

Production:BBC,