College Dean Vernon Wormer wants to remove the Deltas, who are already on probation, due to various campus conduct violations and an abysmal academic standing, so he invokes his emergency authority and places the fraternity on "double-secret probation." He directs the clean-cut, smug Omega president Greg Marmalard to find a way for him to remove the Deltas from campus. Various incidents further increase the dean's and the Omegas' animosity toward the Deltas, including the prank-related accidental death of a horse belonging to Omega member and Reserve Officers' Training Corps cadet commander Douglas C. Neidermeyer and Otter flirting with Marmalard's girlfriend Mandy.