Rod Walker is a high school student who dreams of becoming a professional colonist. The final test of his Advanced Survival class is to stay alive on an unfamiliar planet for between two and ten days. Students may team up and equip themselves with whatever gear they can carry, but they are otherwise completely on their own. They are told only that the challenges are neither insurmountable nor unreasonable. On test day, students walk through the Ramsbotham portal and find themselves alone on a strange planet, but reasonably close to the pickup point. Rod, acting on his older sister's advice, takes hunting knives and basic survival gear, rather than high-tech weaponry, on the grounds that the latter could make him overconfident. The last advice that the students receive is to "watch out for stobor."