David Banner(Bill Bixby) finds work as taxi cab driver for a woman named Colleen Jensen(played by Esther Rolle) who is being targeted by gangsters who want her out of business for their own reasons. Of course, as David is currently her sole driver, the crooks target him specifically, which is stress enough when he isn't trying to get a pregnant woman to the hospital, or dodging the pursuit of Mr. McGee(Jack Colvin) after the Hulk makes his inevitable appearance, though David decides to stay around to help Colleen out. Fun episode makes good use of the taxi driving possibilities, as David cleverly avoids the discovery of him when McGee becomes a passenger!