a man travels back in time relive gym class

Four pals are stuck in a rut in adulthood: Adam has just been dumped, Lou is a hopeless party animal, Nick is a henpecked husband, and Jacob does nothing but play video games in his basement. But they get a chance to brighten their future by changing their past after a night of heavy drinking in a ski-resort hot tub results in their waking up in 1986.

After their first adventure with the Hot Tub Time Machine, Lou and Nick are living very well off their ill-gotten gains, while Jacob still cannot rely on Lou to be a positive role model. When an unknown assailant breaks into Lou's mansion and shoots him, Nick and Jacob take him for another trip in the hot tub. They emerge in the year 2025, where they must figure out who shot Lou and prevent it from happening again.

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.