Time travllers in london.

The Doctor is a Time Lord: a 900 year old alien with 2 hearts, part of a gifted civilization who mastered time travel. The Doctor saves planets for a living—more of a hobby actually, and the Doctor's very, very good at it.

The adventures of The Doctor, a time-traveling humanoid alien known as a Time Lord. He explores the universe in his TARDIS, a sentient time-traveling spaceship. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Along with a succession of companions, The Doctor faces a variety of foes while working to save civilizations, help ordinary people, and right many wrongs.

Marty and Doc are at it again as the time-traveling duo head to 2015 to nip some McFly family woes in the bud. But things go awry thanks to bully Biff Tannen and a pesky sports almanac. In a last-ditch attempt to set things straight, Marty finds himself bound for 1955 and face to face with his teenage parents -- again.

The final installment finds Marty digging the trusty DeLorean out of a mineshaft and looking for Doc in the Wild West of 1885. But when their time machine breaks down, the travelers are stranded in a land of spurs. More problems arise when Doc falls for pretty schoolteacher Clara Clayton, and Marty tangles with Buford Tannen.

Bill and Ted are high school buddies starting a band. They are also about to fail their history class—which means Ted would be sent to military school—but receive help from Rufus, a traveller from a future where their band is the foundation for a perfect society. With the use of Rufus' time machine, Bill and Ted travel to various points in history, returning with important figures to help them complete their final history presentation.

The misadventures of two time-travelling slackers as they travel into the distant past and future.

In 2004, an officer for a security agency that regulates time travel must fend for his life against a shady politician who has a tie to his past.

Jack Logan is a time traveler from 2007 who hunts down rogue travelers and brings them to justice before they can alter the past.

The night after another unsatisfactory New Year's party, Tim's father tells his son that the men in his family have always had the ability to travel through time. They can't change history, but they can change what happens and has happened in their own lives. Thus begins the start of a lesson in learning to appreciate life itself as it is, as it comes, and most importantly, the people living alongside us.

An entry in the Bell Science animated film series, on the nature of time.