"The series chronicles the adventures of the Doctor, an enigmatic Time Lord from the planet Gallifrey who has two hearts, a brilliant (if eccentric) mind, and the ability to regenerate into a completely different physical form. He travels in a time-and-space machine called the TARDIS (Time and Relative Dimension in Space), which looks just like a battered old London Police Public Call Box, and, assisted by a host of loyal companions, he fights evil in all its monstrous shapes and forms, including the ruthless mutant Daleks in their armored travel machines; the emotionless Cybermen from Earth's sister planet, Mondas and the deadly Ice Warriors from Mars..."