The film follows three friends who have been in a rut in their lives: Adam Yates (John Cusack) is dumped by his girlfriend; Nick Webber-Agnew (Craig Robinson) is a henpecked husband with a dead-end job at a dog spa; and Lou Dorchen (Rob Corddry) is a party animal in his 40s. When Lou is hospitalized for carbon monoxide poisoning, Adam and Nick sympathetically take him and Adam's shut-in 20-year-old nephew Jacob (Clark Duke) to a ski resort at Kodiak Valley, where the three had some good times in the past. During a night of heavy drinking in the hotel room's hot tub, they spill the contents of a drink called Chernobly on the console. The next day, they go skiing, but after too many strange occurrences (people dressed in 1980s fashion, music videos on MTV, and that Michael Jackson is still black), they realize they have traveled back to 1986. Not only that, but they have also assumed their younger bodies: they see each other as their normal age, but in their reflections and to other