 When two school teachers enter a London junkyard one foggy night in 1963 in search of a mysteriously advanced student, they do not suspect that it will be the beginning of an adventure across the infinite reaches of time and space. For there they encounter a crotchety old man who calls himself  The Doctor , who apparently lives inside an old police telephone box... which is, in fact, an astounding time and space machine larger inside than out, called a TARDIS. Over the course of the series, companions would come and go, the Doctor himself would  regenerate  into different men at the point of death and develop into a champion of justice and freedom, and numerous evils would arise to challenge him and threaten the universe with domination and destruction, such as the evil pepperpot Daleks and the soulless, emotionless Cybermen. And it would be revealed that the Doctor is a renegade Time Lord, from a world called Gallifrey... or is he?