博士正在宇宙中飞行突然被截停，原来是白守卫出手干涉，他告诉博士宇宙中有数把时间之钥的碎片散播在时间和空间中，若不将他们收集而落到黑守卫的手中，宇宙将迎来空前绝世的灾难，热爱帮助的博士怎能错过这一切？回到塔迪斯之后博士和他的新同伴Romana开启了一场寻找时间之钥的冒险，而作为博士学妹的Romana在对博士傲慢和不理解慢慢转变成敬仰乃至携手唱平的无间搭档。

Peter Matty a successful has his world is turned upside down when he meets the beautiful Phyllis Du Salle on a flight to London. Soon after she disappears, and Matty will stop at nothing to find her.

Sam Laker is an American industrialist, working in Britain, who has just been awarded an international award for industrial design. He is planning to travel to East Germany to attend a trade show and show off his invention, taking his 10 year old son with him for a holiday. Meanwhile a British Intelligence officer who served with Laker in the Second World War decides to use the opportunity of Laker's trip and his lack of an intelligence profile to coerce him into carrying out an assassination.

Stranger from Venus (a.k.a. Immediate Disaster and The Venusian) is the story of a woman who meets a stranger with no pulse who has the power of life and death at his touch. He is here from Venus to warn Earth about the atom.