Derrick Costa

A new super train is built when a meteorite crashes near by, releasing a tiny creature. Once it kills and consumes everyone on board the train, it begins to grow and multiply into hordes of different creatures.

"Battle Ball," high-powered motorcross teams equipped with metal claws, protective armor, and a caged car which is used as the moving goal--has risen in prominence to become San Francisco's most coveted underground gambling sport.

Rogue Vietnam War vets led by their old commander Sloan try to steal some diamonds, but mysterious Megan Marlow steals them first. Sloan sends his men after her, but rogue cop Jack Cates, who's partner was murdered by Sloan, helps her.

The mob and the government race to be the first to recover a stolen alien artifact with unparalleled powers.