Chuta Kokonose is an orphan and lives with his aunt. For as long as he can remember he's had a voice in his head, but other than that he's a normal boy - right until the day when a strangely- looking thing follows him home and teleports him to a space police station. The Chief of Solar System Department, tells him that he has been chosen by the computer as a possible candidate to join the police force. Chuta, who was shocked at first, decides to take the aptitude test after being urged by the voice in his head.