Under the Yum Yum Tree

A wealthy landlord, Hogan, rents apartments to young women at a low price to spy on and seduce them. When his latest conquest, a college professor, leaves, he rents to Robin, a college student, and her roommate. Unbeknownst to Hogan, Robin is Irene's student and niece, and her roommate is her boyfriend, David. They're testing their compatibility before marriage. Hogan tries to thwart their romance and get Robin for himself, while Irene tries to protect her niece from Hogan's advances and ensure they stick to their arrangement.