Doctor Who

Doctor Who is a British science fiction television show about a time-travelling alien human-like being called the Doctor. The Doctor uses a machine called the TARDIS (Time and Relative Dimension in Space) to travel through time and space to explore different places and have adventures. The Doctor has two hearts and has lived for hundreds of years. He encounters a lot of different alien creatures and helps people along the way. At the end of every story the Doctor moves on to a new adventure in a different time and place.