The plot concerns a small group of people who are forced to flee from their base (which happens to be a Mission) in an old school bus when the VC launch a vicious assault upon it. Along the way they are joined by a group of three battle hardened American Special Forces soldiers and together they desperately fight to make it to safety.

A group of people are trapped in a West Berlin movie theater infested with ravenous demons who proceed to kill and possess the humans one-by-one, thereby multiplying their numbers.

In the near future the two spaceships Argos and Galliot are sent to investigate the mysterious planet Aura. As the Galliot lands on the planet her crew suddenly go berserk and attack each other. The strange event passes, but the crew soon discovers the crashed Argos – and learns that her crew died fighting each other! Investigating further, the explorers come to realize the existence of a race of bodiless aliens that seek to escape from their dying world.