

In a post-apocalyptic earth, where most of humanity lives underground, a group of surface people stumble upon an abandoned lab that was trying to bring life back to the earth's surface, but the place is run over by vicious rats.

In a polluted future Venice researchers work to improve the situation. One day, unknown forces start killing them. A team of soldiers and a couple of civilians is sent to investigate. Soon, they encounter strange murderous creatures.

Three thugs commandeer a few cars on a moving train and spread terror among the passengers.