Two aeroplane passengers take on the mission of a secret agent after he is murdered.

The Avengers is a British television series created in the 1960s. It initially focused on Dr. David Keel and his assistant John Steed. Hendry left after the first series and Steed became the main character, partnered with a succession of assistants. His most famous assistants were intelligent, stylish and assertive women: Cathy Gale, Emma Peel and Tara King. Later episodes increasingly incorporated elements of science fiction and fantasy, parody and British eccentricity.

A man pays a hitman to kill him. Circumstances change and he tries to call off the hit but he has trouble getting the deal killed.