In 1936, archaeologist and adventurer Indiana Jones is hired by the U.S. government to find the Ark of the Covenant before the Nazis can obtain its awesome powers.
Marty McFly, a 17-year-old high school student, is accidentally sent 30 years into the past in a time-traveling DeLorean invented by his close friend, the maverick scientist Doc Brown.
A human soldier is sent from 2029 to 1984 to stop an almost indestructible cyborg killing machine, sent from the same year, which has been programmed to execute a young woman whose unborn son is the key to humanity's future salvation.
A machine from a post-apocalyptic future travels back in time to protect a man and a woman from an advanced robotic assassin to ensure they both survive a nuclear attack.
A cyborg, identical to the one who failed to kill Sarah Connor, must now protect her ten year old son John from an even more advanced and powerful cyborg.