Roger is a janitor on board the scientific spaceship "Arcada" within the Earnon galaxy which holds a powerful experimental device called the "Star Generator" (a thinly-veiled reference to the "Genesis Device" from ""). Roger emerges from an on-duty nap in a broom closet to find that the ship has been boarded and seized by the sinister Sariens. Using a keycard that he finds on the body of a dead crew member, he finds his way to an escape pod and escapes the "Arcada".