

Siblings Mimi and Luke discover a strange, glowing gem while digging in their garden. That night, an alien monster emerges from the hole. The monster enters an old shoe factory and brutally kills a group of thieves hiding out there. The next day, Mimi and Luke follow a trail to the shoe factory and discover the monster, who identifies himself as "Arch-Duke of Nightmares", a deadly alien warrior imprisoned on earth after attempting to destroy the galaxy in a rampage.