During initiation week, Casey gets back at Rebecca by saddling her with a difficult scavenger hunt. Meanwhile, Rusty deals with a scheduling conflict involving a physics exam and a fraternity beer-pong tournament.
Casey sees trouble ahead when Cappie sets Rusty up on a date for a fraternity mixer. Meanwhile, Ashleigh misjudges Calvin's intentions after he volunteers for Zeta's party-planning committee. The band Plain White T's perform.
Rusty's science background becomes invaluable to Kappa Tau when its volcano for a Mount Vesuvius bash fails to blow its top. Meanwhile, Casey meets Evan's parents, but she's overshadowed by Rebecca's surprise appearance.
As a demanding week of midterm exams approaches, Rusty considers a sure-fire way to keep his grades up while not missing out on the fun at the Kappa house. Meanwhile, sparks fly when Casey and Cappie are paired on a school project.
The bond between Frannie and Casey is tested when both are in the running for the coveted title of Omega Chi Sweetheart. Meanwhile, the ever-present Dale cramps Rusty's style when he wants to be alone with Jen K.
As a new semester begins, Casey adjusts to being sorority president after Zeta's fall from grace and her split with Evan. Meanwhile, Rusty tries to forget about Jen K., Calvin mulls rejoining the Omegas, and Cappie and Rebecca keep their fling a secret. The Plain White T's perform at an all-Greek carnival.
Hoping to sneak around Dean Bowman's probationary despotism, Casey tries to liven up the Zeta Betas by joining forces with Cappie and his Kappa Tau brothers to plan a Prohibition party with a Great Gatsby theme.
Omega Chi becomes the victim of Kappa Tau's pranks when Cappie seeks to get even with Evan for blowing the whistle on their recent underground festivities. Meanwhile, Casey's rivalry with Rebecca intensifies when she learns about Rebecca's new relationship.
Rusty's friendship with Calvin suffers when the rivalry between the Kappas and the Omegas escalates into a seesaw battle of practical jokes. Meanwhile, Casey makes a risky decision to bring an end to Lizzi's overbearing supervision.
With the annual Greek Ball on the horizon, Casey and Cappie recall a fateful development from their freshman year, and Casey is also reminded of a selfless act by Frannie that had a major impact on her life.
Determined to move on after their recent failed relationships, Rusty and Casey take action: Rusty enlists Dale to help him get a date, and Casey comes to terms with her split from Evan when a majority of her Zeta sisters want to reunite with the Omegas.
Parents' Weekend causes dilemmas as Rusty worries about Kappa's reputation as a party house, Rebecca hesitates to tell her father that she's dating slacker Cappie, and Dale regrets inviting his folks to share in his college experience.
When a series of bizarre fraternity-coaching competitions pits the Zeta Beta sisters against one another, Casey develops a crush on a Lambda Sigma brother, and Rebecca is assigned to help the Kappa Taus, putting her relationship with Cappie to the test.
Dissension in the ranks at the Zeta house erupts when Ashleigh gets special treatment from Casey. Meanwhile, Cappie takes action against the current campus rules, and Rusty adjusts to a new relationship.
Now that Cyprus-Rhodes' draconian prohibitions have ended, Omega Chi and Kappa Tau throw competing parties in a quest to claim campus supremacy. Meanwhile, Casey is smitten with a new frat guy (Ryan Sypek), and Rusty reconsiders his relationship with Tina.
As spring break approaches, Cappie's decision to have the Kappa pledges practice using their fake IDs creates an identity crisis for Rusty. Meanwhile, Casey ponders her future after asking for Evan's help in studying for her law-school admission test.
In the first-season finale, the Cyprus-Rhodes students head to the beach for spring break, where Casey finally decides to leave the past behind and cut loose. Meanwhile, Rusty feels out of place and cuts his vacation short by looking up some old friends on his way back to campus.