- Directors: Jay Chandrasekhar
- Producers: Michael Beugg, Bill Gerber, Steve Lemme, Richard Perello, Erik Stolhanske
- Writers: Jay Chandrasekhar, Kevin Heffernan, Steve Lemme, Paul Soter, Erik Stolhanske
- Genres: Comedy
- Actors: Jay Chandrasekhar, Kevin Heffernan, Steve Lemme, Paul Soter, Erik Stolhanske, Will Forte, Ralf Moeller, Eric Christian Olsen, Nat Faxon, Mo Nique, and Cloris Leachman, Cameo appearances, Donald Sutherland, Daniel Poyner, Willie Nelson
At the funeral of their German-born grandfather Johann von Wolfhausen (Donald Sutherland), brothers Jan and Todd Wolfhouse (Paul Soter and Erik Stolhanske) discover that family tradition demands they travel to Munich during Oktoberfest to spread his ashes on the Theresienwiese.
Their great-grandmother, Gam Gam (Cloris Leachman), gives them two tickets to Munich, where a Mr. Schniedelwichsen (Bjorn Johnson) will take them to the family resting place. While waiting for Schniedelwichsen after their arrival, the brothers unintentionally start a brawl that takes down an entire Oktoberfest tent.
Schniedelwichsen leads Jan and Todd to Beerfest, an underground drinking game tournament run by Baron Wolfgang von Wolfhausen (JÃ¼rgen Prochnow). The triumphant German national team is furious that Schniedelwichsen would bring outsiders to the contest, so he is shot. Jan and Todd discover that the von Wolfhausens are related to the Wolfhouses. The German team reveals that Johann was a stable boy who stole the recipe for “the greatest beer in all the world” decades ago and ran away with his prostitute mother, Gam Gam. The Germans celebrate an easy win over Jan and Todd in a drinking contest by urging the audience to pelt Jan and Todd with vegetables, destroying the urn containing their grandfather’s ashes, and spilling them all over the brothers.
The team celebrates in Amsterdam, where they bump into Willie Nelson (in a cameo role). Because Willie’s marijuana-smoking tournament teammates, Cheech and Chong, were not able to attend the contest, Nelson invites the Beerfest team to join him and they gladly do so. The film ends with a smoke-filled screen and the words “Coming Soon – Potfest”.