An intergalactic Freightcraft loaded with a valuable cargo of lethal nuclear fuel has been hijacked by an alien suicide squad intent on destroying all life on the small but mineral-rich planet, Mirus-3. They have set the ship on a collision course. You have been placed aboard and must reach the engine room in order to override the Tachyon Drive and avert disaster. But beware of the ship's inbuilt security traps, and dodge or kill the Alien patrols. this is a crucial stage in your initiation into the mastery of time and space. But you've only 2 hours to go - and time is ticking away. there's help at hand if you watch out for cryptic password clues that can help you pass through computer controlled doors. Sequels were Mission Om and 1990.