Bilgi :Low-budget story of four astronauts in deep space, whose mission is to destroy unstable planets in star systems which are to be colonised. The late Commander Powell is stored in deep freeze, where he is still able to offer advice. As their mission nears completion, they must cope with a runaway alien which resembles a beach-ball, faulty computer systems, and a "smart bomb" who thinks it is God.The crew of the Dark Star are on a 20 year mission to clear a path in space by destroying planets that are in the way of navigation routes. After a series of mishaps Mother, the ships computer, can no longer persuade Bomb not to detonate. Even the dead captain is of little help in arguing with Bomb who is bound to do his duty.