Accident prone teenager, Percy discovers he's actually a demi-God, the son of Poseidon, and he is needed when Zeus' lightning is stolen. Percy must master his new found skills in order to prevent a war between the Gods that could devastate the entire world.

A crew of miniature aliens operate a spaceship that has a human form. While trying to save their planet, the aliens encounter a new problem, as their ship becomes smitten with an Earth woman.