Thirty years in the future, mankind has been forced underground by a deadly virus. The surface, a lifeless wasteland. Two members of the 'Subtropolis' special forces, are thrust into a deadly adventure when they accept a new mission: Return topside, rescue a lost recon team and come back alive. One problem: they've been lied to. Cut off from civilisation and slowly being infected by the deadly disease, their ordeal is just beginning. Before long the inhabitants of this apocalyptic world show up and are hungry...for them.