Charlie Martin, a JI whose fraternity gets kicked off campus after it takes the rap for a rival fraternity gone awry. Three years later, Charlie and the remaining brothers must throw the greatest rush event to recruit a new pledge class and bring the house back to glory.
Erik, Ryan, and Cooze start college and pledge the Beta House fraternity, presided over by none other than legendary Dwight Stifler. But chaos ensues when a fraternity of geeks threatens to stop the debauchery and the Betas have to make a stand for their right to party.
In the wake of two back-to-back mass murders on Chico's frat row, loner Brent Chirino must infiltrate the ranks of a popular fraternity to investigate his twin brother's murder at the hands of the serial killer known as "Motherface."
Loner freshman Jake Taylor is forced to join the wildest fraternity on campus when the frat brothers refuse to accept his geeky cousin/roommate unless Jake agrees to pledge with him. As the semester progresses, Jake struggles to maintain his grades as well as his affair with Paige, a beautiful sophomore who hates all fraternities. Through naked scavenger hunts, sorority ass-signings and all night
Shelley is living a carefree life until a rival gets her tossed out of the Playboy Mansion. With nowhere to go, fate delivers her to the sorority girls from Zeta Alpha Zeta. Unless they can sign a new pledge class, the seven socially clueless women will lose their house to the scheming girls of Phi Iota Mu. In order to accomplish their goal, they need Shelley to teach them the ways of makeup and men; at the same time, Shelley needs some of what the Zetas have - a sense of individuality. The combination leads all the girls to learn how to stop pretending and start being themselves.
College freshman Sydney White arrives at Southern Atlantic University, determined to pledge her late mother's sorority. Unfortunately, she finds that the sisterhood has changed since her parent's day. Banished to a condemned house, Sydney joins forces with seven outcasts to take over the student government and win equal rights for nerd and noted alike.
A sorority moves in next door to the home of Mac and Kelly Radner who have a young child. The Radner's enlist their former nemeses from the fraternity to help battle the raucous sisters.