I have to stop this thing from happening but how

The Doctor, Steven and Dodo land on an alien world in this animated reconstruction of a lost 1966 Doctor Who adventure. There, they meet two peoples; the cutthroat Savages, and civilised Elders, who claim to know all about the Doctor and his travels. Is all as it seems, and will the TARDIS crew come out in one piece if it isn't?

The Doctor and his companion travel across time and space encountering incredible friends and foes.

Eighties teenager Marty McFly is accidentally sent back in time to 1955, inadvertently disrupting his parents' first meeting and attracting his mother's romantic interest. Marty must repair the damage to history by rekindling his parents' romance and - with the help of his eccentric inventor friend Doc Brown - return to 1985.

Josh Gates goes on the adventure of a lifetime when he and Christopher Lloyd set off to track down the most iconic movie car in Hollywood history, The DeLorean Time Machine from "Back to the Future," and deliver the vehicle to Michael J. Fox.

The provocative story of Cole, a time traveler from a decimated future in a high-stakes race against the clock. Utilizing a dangerous and untested method of time travel, he journeys from 2043 to the present day on a mission to locate and eradicate the source of a deadly plague that will all but annihilate the human race.

In the post-apocalyptic future, reigning tyrannical supercomputers teleport a cyborg assassin known as the "Terminator" back to 1984 to kill Sarah Connor, whose unborn son is destined to lead insurgents against 21st century mechanical hegemony. Meanwhile, the human-resistance movement dispatches a lone warrior to safeguard Sarah. Can he stop the virtually indestructible killing machine?

A small band of resistance fighters battle the cyborgs that have taken control of the planet.

John Anderton is a top 'Precrime' cop in the late-21st century, when technology can predict crimes before they're committed. But Anderton becomes the quarry when another investigator targets him for a murder charge.

Ten years after the demise of Precrime, crime-solving is different and justice leans more on sophisticated and trusted technology than on the instincts of the precogs—individuals who able to see the future. In Washington, D.C., a man haunted by the future and a cop haunted by her past race to stop the worst crimes of the year 2065 before they happen.