It's Dry Weekend at Cyprus Rhodes University, and Casey plans a non-alcohol party night amongst all of the houses. But when she and Evan are partnered together to patrol each of the houses for signs of any prohibited beverages, they each have a brownie at the Psi Phi house - unaware of its secret ingredient - causing them to hide out in the ZBZ bathroom until the effects wear off. Meanwhile, Ashleigh frantically tries to find Casey, and Fisher offers to help, making her further question whether or not she should take him back.

It's Founders Weekend at the ZBZ house and the girls decide to keep the house's decline in the rankings a secret in hopes they can hustle enough donations to meet their goals. As a result, Casey creates a plan to suck up to Doris McGovern, the wealthiest ZBZ alum, while Ashleigh and Rebecca, still feuding over the Fisher incident, start their own competition on who can raise the most money. Whose plan will succeed in raising money for the house, bringing the sisters back together?