Earth Rescue

A Coded message for help from Jim's father on Earth sent to Kharlor, naming Jim and Ali. The FTL Battle Cruiser Aurora is sent. They find Jano Dagar is planning to wreck Earth by mining for the laser-weapon-enhancing mineral Dwaafmite. But Jano is planning more. He aims to completely destroy Earth by exploding Planet-buster bombs in Yellowstone Park to create a super-volcano and explode more at places in the Ring of Fire to shift the Tectonic Plates. It takes all the resources of the Aurora and Earth to have any chance of stopping him. Jim and Ali are in the front line in fereting out Jano's plans and combatting them, even when they are taken prisoner