Dorothy, back in Kansas, can't stop thinking about Oz. She believes that her friends have sent her a key. Auntie Em, worried for Dorothy's health, takes her to a famous doctor who works miracles with electricity. Dorothy escapes from the mental hospital. When she awakes, she and a chicken named Billina find themselves in Oz. Dorothy tries to find her old friends in the Emerald City, but learns that they have all been transformed by the Nome King....

Mahoney and friends have graduated from the Police Academy and are issued their first assignments. Their cheerfulness and devotion to duty outweighs any shortcomings, but are even they ready to do battle with a band of graffiti daubing terrorists?

The mayor decides to loosen the restrictions at the Police Academy. Soon, the new class is overrun with misfits and losers, including Carey Mahoney, who must choose between the force or jail; Karen, a pretty cadet whom Mahoney has his eye on; Moses Hightower, a mountain of a man who likes to tend flowers; and Larvell Jones, who has the ability to imitate the sound of practically anything. Commandant Lassard and Lt. Harris, are not thrilled with their...