Because of her ability to live in space without any life support, Starflake is recruited by the Deep Space Rangers, but her life there proves to be more challenging than anything she's ever encountered before. Facing a grueling education and hatred from her fellow cadets, Star must prove her worth in every phase of her training. But when a helpless hospital ship is attacked by the infamous Admiral Sun, Star must risk everything in a deadly mission to go after the legendary pirate leader, even if it means the sacrificing of those closest to her.