Hot Tub Time Machine (2010)

In 2010, three friends are dissatisfied with their lives: Adam Yates (John Cusack) has been dumped by yet another girlfriend, and his geeky nephew Jacob (Clark Duke) lives in his basement, playing video games, with no idea who his father is. Lou Dorchen (Rob Corddry) is a party guy way past his prime. Nick Webber (Craig Robinson) has a dead-end job at a dog spa and an unfaithful and controlling wife named Courtney (Kellee Stewart). Lou almost dies from carbon monoxide poisoning in what his friends think is a suicide attempt. Adam and Nick impulsively take him and Jacob to the site of some of their most memorable weekends, the Kodiak Valley Ski Resort. Upon arrival at the resort, they see that Kodiak Valley (K-Val as they call it) has fallen on hard times as well. Everywhere they look, stores and shops are boarded up, the hotel lobby is musty, and has cats running freely around. During a crazy night of drinking in a hot tub, they spill a can of an illegal Russian energy drink called "Chernobly" on the hot tub's controls. The next day, they wake up in 1986. They see each other as their normal age, but in their reflections and to other people, they appear as they did in 1986, except Jacob, who was not yet born. They arrive during "Winterfest '86," the weekend when Poison played to a huge crowd at the then-thriving Kodiak Resort.

In 1986, Adam broke up with his first girlfriend, Jenny (Lyndsy Fonseca), and she stabbed him in the eye with a fork. Lou was beaten up by Blaine (Sebastian Stan), the ski patrol bully. Nick played a bad show with his band at an open mic contest. The four are at first concerned that if they change even the slightest thing in this time, it could have drastic consequences in the future, so they set out to do exactly what they did 20 years ago. Later, they decide that this may be a chance to change their destinies. When Jacob begins to flicker in and out, he warns the guys that if they continue what they are doing, then he may be wiped out of existence. A mysterious hot tub repairman (Chevy Chase) informs Jacob that the key to their time travel was the Chernobly, which contains chemicals that are vital to the time travel process.

Adam meets a quirky music journalist named April, though he refrains from talking to her at first because he doesn't want to change the past. Adam changes his mind, and instead seizes this 'second chance' opportunity to save his relationship with Jenny, only to find out she intended to break up with him all along. As fate would have it, Adam makes a comment about Jenny getting older and developing 'trucker hips,' which causes Jenny to lash out at him, again stabbing him in the eye with a fork. Devastated, Adam returns to their hotel room to do drugs and write bad poetry. He later goes wandering around the resort, where he meets up with the music journalist April and the two get closer.

Nick realizes his first time around the open mike band performance he gave was such a disaster, it led him to abandon his much-loved music career. Feeling glad to be back (a comment that confuses his band mates) Nick rocks the crowd with his band with performances of "Jessie's Girl" and preview version of "Let's Get It Started."

While busy tending to their own problems, the guys forget to show up for Lou's appointed fight with Blaine and his cronies. Lou is beaten up by Blaine, who takes Lou's hydration pack that contains the Chernobly. They later go to Blaine's ski cabin to retrieve the energy drink, At the cabin, Lou finds the courage to punch Blaine back. Lou also seduces Adam's sister, Kelly (Collette Wolfe), and has sex with her, conceiving Jacob. While trying to get the Chernobly, the guys are joined by Kelly and a bellhop named Phil (Crispin Glover) who is seen throughout the movie doing dangerous stunts, which Lou and Jacob expect to be the incident that costs him his left arm.

The guys get the Chernobly and race back to the hot tub. They spill the Chernobly on the controls and a massive temporal vortex appears. As the hot tub starts to activate, Lou announces he is going to remain in 1986, admitting to Adam that he was trying to kill himself, and that if he goes back it will happen all over again. In a gesture of friendship, Adam says he will stay with Lou, and when they hug, Lou pushes Adam backwards into the spinning vortex.

Back in 2010, Adam, Nick, and Jacob discover that Lou, Kelly, and Jacob are now a happy family enjoying a lavish lifestyle due to Lou taking advantage of his knowledge of the future. Adam discovers that he eventually married April, and Nick is a successful music producer married to a loyal Courtney. Adam, Nick, Lou, and Jacob reunite at Lou's mansion with their families, satisfied with their new lives.