A broken-hearted Rusty and Casey head back to school for a new semester after the fallout from the newspaper article that turned the Greek system upside down. Under the watchful eye of Dean Bowman and a newly assigned ZBZ national rep, Casey organizes an all-Greek carnival in support of the dean's favorite charity. At the carnival, the Plain White T's return for another performance as the Kappa Tau band. As the newly appointed president of Zeta Beta Zeta, Casey faces the scrutiny of a national representative assigned to come in and get the sorority back on track. But the sorority turns out to be the least of her problems as she struggles as a newly single girl to get over Evan and to accept Cappie's new relationship with her sworn enemy, Rebecca. For Rusty, it is his struggle with the loss of his first love Jen K. that begins to damage his relationship with his fraternity brothers as well as his fellow pledge class. Also, in an effort to help Calvin reclaim his place in the Greek system, Rusty fights hard to help him fit in with the brothers at Kappa Tau but the end result could end up spoiling their friendship.