Zeta Alpha Zeta is a sorority who are the main protagonist of The House Bunny. Zeta Alpha Zeta is lead by Shelley Darlington who is the house mother of the sorority. Shelley was a playboy playmate who was living in the playboy mansion. Until her rival Cassandra who wants that Playmate of the year and was Hugh Hefner favorite playmate. Cassandra lied to Shelley that Hef, is no longer going to renew her contract as a playmate and ask her leave the Mansion. Shelley was hurt and left. Her car broke down and a cop pulled her over. A misunderstanding got her arrested, but they drop the charges on Shelley and she can go. She saw soroity sisters go to a unknown college and sees if she can stay their and be a sorority sister too. The sorority that Shelley was trying to join was Phi Iota Mu. Ashley