Mike and Dave Stangle 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 clan insists that they both 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 hard.
Peter Quill and his fellow Guardians are hired by a powerful alien race, the Sovereign, to protect their precious batteries from invaders. When it is discovered that Rocket has stolen the items they were sent to guard, the Sovereign dispatch their armada to search for vengeance. As the Guardians try to escape, the mystery of Peter's parentage is revealed.