Richard has no idea that the older woman in his new relationship is none other than Professor Macklin's ex wife, Katrina. Owen and Natalie volunteer at a psychiatric center and Natalie begins to think differently of him. Meanwhile, all the students are learning about sexual manipulation, both in and out of the seminar.

Owen tries to impress Natalie on a date. Lee begins playing online poker and faces the consequences. Sarah decides to dump her new guy after she realizes that sex is not enough. Meanwhile, Richard, Professor Macklin and his wife Katrina all end up at the same concert.

After Professor Macklin selects passion as the topic for the week, Zoe complains to him that she has nothing to be passionate about. Richard decides to use his family name to get his lover, Katrina, access to city officials. Natalie and Owen decide to try and help save the school's health clinic, although Owen is only in it to try to get Natalie. However, soon Owen's sister, Sarah, decides to oppose the heath clinic, placing Owen in an awkward situation.

Richard is still depressed over the loss of Katrina after she decides to go back to Professor Macklin. He soon ends up in the arms of ex-girlfriend, Natalie, which makes Owen extremely jealous. Meanwhile, Lee continues his gambling addiction and has to buy a term paper for his most important class. Zoe begins to contemplate losing her virginity just so she can make Lee jealous.