Attempting to return to UNIT HQ, the Doctor (Tom Baker) and Sarah land in England in 1911, where an ancient force is preparing to return and wreak destruction on the Universe. Sutekh the Destroyer, last of the Osirans, is planning to free himself from his prison on Mars. His robot Mummies are building a rocket to destroy the device which holds him prisoner and If he isn't stopped, there is not a force in the Universe which can stand against him.

War drama starring Michael Caine. During World War II Captain Douglas (Caine) is sent to North Africa to lead a small group of mercenaries into the desert to knock out an enemy fuel reserve. However, there is friction between the Captain, veteran Colonel Masters (Nigel Green) and Cyril Leech (Nigel Davenport), head of the hired mercenaries, as they disagree on how to successfully carry out the mission. Things go from bad to worse when they find out that their assignment is a booby-trapped suicide mission, which threatens to end in pointless bloodshed.

War drama starring Michael Caine. During World War II Captain Douglas (Caine) is sent to North Africa to lead a small group of mercenaries into the desert to knock out an enemy fuel reserve. However, there is friction between the Captain, veteran Colonel Masters (Nigel Green) and Cyril Leech (Nigel Davenport), head of the hired mercenaries, as they disagree on how to successfully carry out the mission. Things go from bad to worse when they find out that their assignment is a booby-trapped suicide mission, which threatens to end in pointless bloodshed.