Doctor Who: The War Machines

The TARDIS arrives on the planet Marinus on an island of glass surrounded by a sea of acid. The travellers are forced by the elderly Arbitan to retrieve four of the five operating keys to a machine called the Conscience of Marinus, of which he is the keeper. These have been hidden in different locations around the planet to prevent them falling into the hands of the evil Yartek and his Voord warriors, who plan to seize the machine and use its originally benevolent mind-influencing power for their own sinister purposes.

Ba'al travels back in time and prevents the Stargate program from being started. SG-1 must somehow restore history.

Fin and his wife April travel around the world to save their young son who's trapped inside a sharknado.

After the Queen of Hearts incites a coup on Auradon, her rebellious daughter Red and Cinderella's perfectionist daughter Chloe join forces and travel back in time to try to undo the traumatic event that set Red's mother down her villainous path.

A college professor wishes he could live in Victorian England. Through a scientific experiment that goes wrong, he is able to make his dream come true. He is now able to travel back and forth in time.

In the film, the Crisis Empire devise a plan to defeat Kohtaro Minami by reverting him back to his old form of Kamen Rider Black and sending out several revived monsters after him. However, Kamen Rider Black is assisted by another RX, who used a time warp to help his past self. The two are joined by RX's alternate forms of Robo Rider and Bio Rider and the four Kamen Riders combine their powers to defeat the revived monsters.

Sam is transported through time by a strange device.

Set ten years after the events of the original, James Cameron’s classic sci-fi action flick tells the story of a second attempt to get rid of rebellion leader John Connor, this time targeting the boy himself. However, the rebellion has sent a reprogrammed terminator to protect Connor.

It's been 10 years since John Connor saved Earth from Judgment Day, and he's now living under the radar, steering clear of using anything Skynet can trace. That is, until he encounters T-X, a robotic assassin ordered to finish what T-1000 started. Good thing Connor's former nemesis, the Terminator, is back to aid the now-adult Connor … just like he promised.

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.

The Borg, a relentless race of cyborgs, are on a direct course for Earth. Violating orders to stay away from the battle, Captain Picard and the crew of the newly-commissioned USS Enterprise E pursue the Borg back in time to prevent the invaders from changing Federation history and assimilating the galaxy.