After a group of young revolutionaries break into a company's corporate headquarters and steal $5,000,000 worth of heroin to keep it off the street, they call on San Francisco Police Lieutenant Virgil Tibbs for assistance.

After an inquest determines that egotistical Jeff Ambler has committed suicide, six of his acquaintances, some of whom were financial backers of his art gallery, gather together, unconvinced by the ruling.

A white family has had the same Black maid for many years. When she tells them she wants to go back to school and will be leaving soon, the 20ish year old son decides what she needs is a change and begins searching for a man to wine and dine her, but who won't marry her, thinking that this will distract her from her plans. The man he finds doesn't entirely cooperate.