The year is 2050 and the Star Runner is two years into its 90 year voyage; a voyage that will take them to the Silver Sun. Frozen in the hold is the precious cargo of 550 frozen New Settlers, waiting to colonise the new planet. After encountering a solar fog, the sensors on the Star Runner pick up a non human entity. Is it an alien? A search is organised before the life form is discovered; Squirt the Cat, smuggled aboard by TYCHO the youngest member of the crew. Alls well that ends well until a major computer glitch threatens the entire mission.