The Monkees get mixed up in a spy ring (Jacques Aubuchon, Arlene Martel) after Davy accidentally purchases a set of red maracas containing secret microfilm. Can the Monkees outwit two professional spies ?

The Monkees attempt to rescue Davy from his girlfriend Lorelei (Arlene Martel), Count Batula (Ron Masak), a wolf man (David Pearl), mummy man, and a Frankenstein-looking monster in a creepy castle.