When Commanders Ali Mukbar and Jim Atkins get the chance to visit a new planet about to be impacted by a Comet they seize the chance. Locating the presence of a Canergorm Warflyer they have to enter the sun's Chromosphere to get holograms of the WarFlyer to prove Jim didn't imagine the sighting - and nearly die in the attempt. When Ali, Princess Clyra Vergred and a team of scientists are captured by the sadistic Canergorms, somehow Jim and others have to locate them and then rescue them. Huge Spiders are not the only deadly alien Life-Form they encounter. Later Jim is caught by Flying Life-Forms with some similarities to Earth's prehistoric Pterosaurs. Now Ali has to rescue him - but that means he will face Court-Martial.