In the far-off country of Pianostan, the people remain happy as long as their King is miserable. But M.A.D. has been ensuring that the King is happy in order to disrupt the peace, so Inspector Gadget is sent out to investigate. To further complicate matters, the King looks exactly like the Inspector!

Gadget is assigned to find and shut down M.A.D.'s training center for its agents and Dr. Claw decides eliminating Gadget will make a good class project for the latest batch of recruits.