A struggling nightclub owner resorts to desperate measures in order to pay off a loan shark.

On a dangerous future Earth filled with monsters, an orphan tries to escape back to SkyArk, a man-made city in the sky, but he soon learns that he has a much greater purpose.

Mankind must fight to survive as Earth is invaded by hostile UFOs bent on destroying the planet. As the epic battle wages on, astronauts sneak aboard the mothership where they discover a portal to the aliens' home world.