Span Girl, the younger sister of Spandexer, arrives on Earth as a warrior from the planet Omega to save the universe from crisis. To investigate a series of human abductions, she disguises herself as a female student and acts as bait, secretly working to expose a sinister conspiracy. She successfully uncovers and captures the true identity of the space criminal Dr. Yogel. However, Yogel is revealed to be a mercenary hired by Gerhardt, a ruthless trafficker who sells Earth women to a black-market slave ring in deep space. After defeating and arresting Yogel, Span Girl strikes a deal with him to rescue the kidnapped humans. Pretending to be captured, she infiltrates the enemy's hideout to buy time and save the victims. But if Yogel fails to deliver the hostages, Span Girl will be subjected to brutal torture—leading inevitably to her downfall. Her body is tormented, her mind broken, and in the end, she faces a final choice: sacrifice herself to save humanity. Can Span Girl truly protect the lives of Earth's people? The answer lies in the film's shocking conclusion!