The secret of teleportation is held by the alien race "the Dorians". Roy Garner, a secret agent for Sidereal Intelligence, is to be sent back to the planet Montefor and the city of Sansato, to look for Alexander Lowry. Roy must find this man as he is close to discovering the secret of teleportation for the earth, but Lowry is lost in the fleshpots of Sansato.
