Adam Strange battles the alien Okri-Ro and his strange devices that seem to be able to release alien creatures from other planets.; Pilot Collins finds Adam Strange's old raygun and a strange device which releases a horde of alien creatures to attack the earth. Space Ranger goes in search of the mystery of Adam Strange.; Armed with the knowledge of what Adam Strange faced in the past, Space Ranger searches for the five devices of Okri-Ro. Adam Strange's descendant joins him in the search.; Because of the cost of his project, Dr. Rocket had to use backing from private industry.