In the brief period of peace after a terrible war on a far future Earth, an outer-space military academy is attacked by an unknown and unstoppable alien force. The commander, along with a group of newly graduated cadets, escapes to a large research station. Pursued by the aliens, the station jumps through a mysterious hyperspace gateway that sends them to a planet in an unknown part of the universe.

Master gunslinger Sabata arrives in Hobsonville, a town completely owned by McIntock, a robber baron who is taxing the inhabitants for the cost of future improvements to the town. Or that's what McIntock says he'll do with the money...