Because of the popularity of a TV series called "Dan Drummond, Space Detective" and one young man's pastime of trying to figure out how crime, especially piracy, could be profitable in space, Roy and his friends immediately become suspicious when the rocketship "Cygnus" and her secretive crew come to the Inner Station. Two of the apprentices go to investigate when the ship is left unattended and find that she's carrying what appear to be ray guns. It turns out that the ship belongs to a movie studio that intends to shoot the first movie filmed in space.