On a planet in a distant galaxy, a power-hungry Leprechaun holds a beautiful alien Princess hostage in order to marry her for her royal title. With her title and his beloved gold, he'll be able to...

On a planet in a distant galaxy, a power-hungry Leprechaun holds a beautiful alien Princess hostage in order to marry her for her royal title. With her title and his beloved gold, he'll be able to rule the universe. What he doesn't count on is an invading platoon of Marines from Earth, come to save the Princess and foil his scheme. The Leprechaun stows himself away on the orbiting spaceship and wreaks havoc on the crew in an attempt to recapture his bride.