When their friend is incarcerated on a prison asteroid using trumped-up charges, a gang of space pirates concoct a plan to free him. As the escape attempt unfolds, they discover a hidden trap and things get complicated. Outgunned by an obsessed police captain, they are driven dangerously near the hot binary stars of Sirius A and B. Their recently-freed friend manages to intervene and save the day, but fresh trouble arises when a planted spy and a pile of explosives enter the game. It takes all the pirate crew can do to survive the devious scheme of their uniformed enemy.