You're the sole crew member aboard the Advent X-5, a space ship designed to transport small animals. Your most recent mission was to take some animals to a planet called Klybex-6 to test their reactions to its thick atmosphere and low gravity, but on the way to Klybex-6, a meteor storm forced you to crash-land the Advent X-5 on Klybex-7.
You're now stranded on the ship, and must get to the emergency shuttle craft and blast off to the nearest star base...
One of the best type-in I played in a while. Highly recommended.