An expedition sets out to survey more of Ganymede. Bill goes along as the cook. While exploring, he and his friend Hank discover artifacts of an alien civilization, including a working land vehicle that has legs, like a large metal centipede. This proves fortuitous when Bill's appendix bursts. Forced to adhere to a schedule, a shuttle picks up the rest of the group and leaves without the missing pair. Hank figures out how to drive the alien vehicle and transports Bill to the next landing site. Bill is then taken to the hospital for a life-saving operation.
An expedition sets out to survey more of Ganymede. Bill goes along as the cook While exploring, he and his friend Hank discover artifacts of an alien civilization, including a working land vehicle that has legs, like a large metal centipede. This proves fortuitous when Bill's appendix bursts. Forced to adhere to a schedule, a shuttle picks up the rest of the group and leaves without the missing pair. Hank figures out how to drive the alien vehicle and transports Bill to the next landing site. Bill is then taken to the hospital for a life-saving operation.