British reporters suspect an international cover-up of a global disaster in progress... and they're right. Hysterical panic has engulfed the world after the United States and the Soviet Union simultaneously detonate nuclear devices and have caused the orbit of the Earth to alter, sending it hurtling towards the sun.

A United Nations investigator crosses paths with a pair of psychic sisters on his way to Trollenberg observatory in the Swiss Alps, which has been plagued by a series of mountaineer disappearances that may be related to a radioactive cloud at the mountain's south face.

Famous British mountaineer Winter wants to climb a difficult summit, the Citadel. He goes to a small village but no guide wants to accompany him. A young man from the village, Rudi Matt, whose father died fifteen years earlier during an attempt to climb the Citadel, is determined to accompany him, with the help of his uncle. Winter also manages to hire a guide from a neighboring village and competitor, Emil Saxo. The roped party of four men then begins the ascent of the still untouched summit.

After being shipwrecked, the Robinson family is marooned on an island inhabited only by an impressive array of wildlife. In true pioneer spirit, they quickly make themselves at home but soon face a danger even greater than nature: dastardly pirates.

A wily old codger matches wits with the King of the Leprechauns and helps play matchmaker for his daughter and the strapping lad who has replaced him as caretaker.

An agent invites his young starlet to a party, to meet all the right people. A chance to move on from the commercials she has been doing, to bigger roles and maybe stardom. However while she is there, she realizes there is a price to pay...

Tommy is a happy sailor, travelling the world, singing his favourite songs. When he visits Spain, he gets mistaken for a famous bullfighter. Tommy finishes up in the bull-ring facing a VERY angry bull and cheered on by the crowd. What will he do now?

A pretty young woman will do anything to escape her deadly dull existence in the backlots of Wales. But when she reaches the bright lights of London is the price too high?

A professor of astronomy helping on a missile development program. An old friend of his is a Russian chess champion. The Russian is working with shady businessman Marek and they plan to kidnap the professor and make it look as though he has defected to the Soviet Union.

"Perilous Assignment" is an episode of ABC's Walt Disney Presents. Disney loved to show viewers behind the scenes of the daring shoots of its theatrically released or TV shows. The theme of the episode is the making of his next film, The Third Man on the Mountain, an adaptation of James Ramsey Ullman's novel Banner in the Sky, based on the true story of the first ascent of the Matterhorn. Walt Disney will not be limited to a simple promotional making-of. He offers to meet exceptional people, including the French mountain guide Gaston Rébuffat. The latter will show climbing techniques and then reveal breathtaking images of his ascents of steep cliffs with a client for the ascent of Mont-Blanc, filmed for the occasion. In 1958, Walt Disney will therefore offer him to be deputy director on the high mountain scenes of the film "The Third Man on the Mountain".