If anything could possiby go wrong aboard the scoutship Dark Star, sooner or later it would. Now in the 20th year of their mission - destroying unstable planets - the ship and its crew were falling apart...
After 20 years in space, isolation and loneliness have left their mark. The four surviving crew members are bored beyond relief. Only an occasional bomb run or another of the inevitable malfunctions aboard ship upsets the monotony.
Then, Bomb #20 is primed, armed and set to detonate - suddenly life on the dark Star becomes frantic...