Mike and Dave are young, adventurous, fun-loving brothers who tend to get out of control at family gatherings. When their sister Jeanie reveals her Hawaiian wedding plans, the rest of the Stangles insist that the brothers bring respectable dates. After placing an ad on Craigslist, the siblings decide to pick Tatiana and Alice, two charming and seemingly normal women. Once they arrive on the island, however, Mike and Dave realize that their companions are ready to get wild and party.
Zac Efron
as Dave Stangle
Adam Devine
as Mike Stangle
Anna Kendrick
as Alice
Aubrey Plaza
as Tatiana
Sam Richardson
as Eric
Stephen Root
as Burt
Sugar Lyn Beard
as Jeanie Stangle
Branscombe Richmond
as Kalani - BBQ Chef
Marc Maron
as Randy
Jake Johnson
as Ronnie
Kumail Nanjiani
as Keanu
Eugene Cordero
as Kai - Hotel Manager
