Sons of Steel (1989)

Agents J and K are back...in time. J has seen some inexplicable things in his 15 years with the Men in Black, but nothing, not even aliens, perplexes him as much as his wry, reticent partner. But when K's life and the fate of the planet are put at stake, Agent J will have to travel back in time to put things right. J discovers that there are secrets to the universe that K never told him - secrets that will reveal themselves as he teams up with the young Agent K to save his partner, the agency, and the future of humankind.

After a fatal test shuts down their project, a disgraced team of scientists enters the criminal underworld to rebuild a forbidden space-bending engine that could rescue humanity or annihilate it entirely.

After accidentally crash-landing in 2022, time-traveling fighter pilot Adam Reed teams up with his 12-year-old self on a mission to save the future.

A vain actor, his best friend, and an activist end up at a mutant freak farm run by a weirdo scientist.

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.

A group of fledgling inventors discover a complex method to manipulate reality. At first, they successfully game the stock market with it, but the consequences of the invention start to catch up with them.

Young daredevil Ernie, his sister Julia, and his best friend Max accidentally trip a time-machine into operation and find themselves transported back in time 65 million years, where they meet a T-rex named Tyra and her rambunctious son Dodger.

Two siblings begin to develop special talents after they find a mysterious box of toys, and soon their parents and even their teacher are drawn into a strange new world – and find a task ahead of them that is far more important than any of them could imagine.

Hoping to alter the events of the past, a 19th-century inventor instead travels 800,000 years into the future, where he finds mankind divided into two warring races.

Amiable slackers Bill and Ted are once again roped into a fantastical adventure when De Nomolos, a villain from the future, sends evil robot duplicates of the two lads to terminate and replace them. The robot doubles actually succeed in killing Bill and Ted, but the two are determined to escape the afterlife, challenging the Grim Reaper to a series of games in order to return to the land of the living.