Dr. Jeremy Lodge (Jamie Gillis), a very strict father and psychologist, has sent his two daughters to boarding school. The eldest daughter, Naomi (Karen Summer) is caught having sex in her dorm and is kicked out of school. When the two sisters return home, Dr. Lodge discovers that his wife (Cyndee Summers) has had an affair with his brother (John Leslie) and angrily throws her out. Naomi chooses to live with her mother and uncle (later revealed to be her biological father), while Robin (Ginger Lynn) chooses to stay with her father. Naomi (the "bad girl") seduces her uncle and has sex with him, while Robin (the "good girl") develops a yearning for her father. Dr. Lodge runs an incest support group and his patients include Joyce McBride (Honey Wilder) and Barbara Scott (Kay Parker), who only appears in the film in brief flashbacks.
Diana is a Roman wife happily married to sympathetic Paolo but she is keen on playing benign games of seduction with other men while resisting the advances of chic lingerie shop owner Silvio and she narrates her adventures to Paolo in order to stimulate their otherwise monotonous sexual life.
Ever in search of adventure, explorer Allan Quatermain agrees to join the beautiful Jesse Huston on a mission to locate her archaeologist father, who has been abducted for his knowledge of the legendary mines of King Solomon.
When a bumbling pair of employees at a medical supply warehouse accidentally release a deadly gas into the air, the vapors cause the dead to re-animate as they go on a rampage seeking their favorite food: brains!
A young teenager named Mikey Walsh finds an old treasure map in his father's attic. Hoping to save their homes from demolition, Mikey and his friends Data Wang, Chunk Cohen, and Mouth Devereaux run off on a big quest to find the secret stash of Pirate One-Eyed Willie.