The space shuttle Olympus is on a routine mission, but with a far-from-routine payload: "Project Viper", an experimental hybrid of human genes and computer chips, designed to adapt to any environment, particularly that of the planet Mars. But as the shuttle crew prepares to launch the first prototype, referred to as "Viper", into space, an unexpected power glitch occurs, causing the container housing the prototype to break open. Soon the astronauts are killed by Viper, and the Secretary of Defense orders the remaining second prototype Viper destroyed - which is stored in a secure NovaGen Science facility, the manufacturer of the prototype. To do the job, he calls on special agent Mike Connors.