Matt and his friend Skinny discuss their Halloween costumes and decide to go trick or treating together. While out, they encounter real monsters like a werewolf, Medusa, and the Black Lagoon monster. They seek help from an old man named Mike who knows how to send the monsters back where they came from. Mike helps them capture the monsters using remote control cars, silver weapons, and an incantation from an old book. They are able to defeat the monsters and send them back through a dark hole that then closes.