The topic of the week is abstinence, but the students have have anything but that on their minds. Lee has a tough time abstaining from both sex and gambling and is forced to go to Richard for a loan to pay back his gambling debt. Zoe is hired as the school's sex columnist. Owen and Natalie re-evaluate their relationship when Natalie refuses to let Owen stay with her for a few days. Owen's response to her decision and the rift it causes between them makes Natalie reconsider getting back together with Richard. Meanwhile, Sarah almost agrees to give her former lover another chance, but changes her mind when she finds out that he's still sleeping with other students.