In the near future, a maintenance vehicle is orbiting the Earth on a mission to repair nuclear-armed satellites.

As the ship grows colder, they find themselves drifting toward the dark side of the Moon.

The mission records of the crew's own ship indicate that the shuttle they have found disappeared in the Bermuda Triangle many years before.

As they attempt to solve this mystery, it quickly becomes apparent that a malevolent force has been waiting on the NASA shuttle, using the aforesaid dead body as its host.

With time, air and power running out, the captain decides to make the ultimate sacrifice.