 Davy meets his double, the shy Prince Ludlow of Peruvia and soon learns the vertically challenged highness has to marry before his 18th birthday in order to assent to the Peruvian throne. The other three Monkees convince Davy to swap places with the Prince and woo young socialite Wendy Forsythe in his stead. However, the evil Count Myron has his eye on the throne as well.