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.

Dave Lizewski is an unnoticed high school student and comic book fan who one day decides to become a super-hero, even though he has no powers, training or meaningful reason to do so.

Two co-dependent high school seniors are forced to deal with separation anxiety after their plan to stage a booze-soaked party goes awry.

A high school senior drives cross-country with his best friends to hook up with a babe he met online.

The prehistoric Croods family live in a particularly dangerous moment in time. Patriarch Grug, his mate Ugga, teenage daughter Eep, son Thunk, and feisty Gran gather food by day and huddle together in a cave at night. When a more evolved caveman named Guy arrives on the scene, Grug is distrustful, but it soon becomes apparent that Guy is correct about the impending destruction of their world.

Jack McCall is a fast-talking literary agent, who can close any deal, any time, any way. He has set his sights on New Age guru Dr. Sinja for his own selfish purposes. But Dr. Sinja is on to him, and Jack’s life comes unglued after a magical Bodhi tree mysteriously appears in his backyard. With every word Jack speaks, a leaf falls from the tree and he realizes that when the last leaf falls, both he and the tree are toast. Words have never failed Jack McCall, but now he’s got to stop talking and conjure up some outrageous ways to communicate or he’s a goner.

After Kick-Ass’ insane bravery inspires a new wave of self-made masked crusaders, he joins a patrol led by the Colonel Stars and Stripes. When these amateur superheroes are hunted down by Red Mist — reborn as The Mother Fucker — only the blade-wielding Hit-Girl can prevent their annihilation.

A grown man is still caught in the crossfire of his parents' 15 year divorce. He discovers he was unknowingly part of a study on divorced children and is enlisted in a follow-up years later, which wreaks new havoc on his family.

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.

Boyd Mitchler and his family must spend Christmas with his estranged family of misfits. Upon realizing that he left all his son's gifts at home, he hits the road with his dad in an attempt to make the 8-hour round trip before sunrise.