Hikaru, the heiress of the wealthy Yuzuki conglomerate and an expert in martial arts, fights day and night as the superheroine "Miss Marshal," using her vast resources and combat skills to thwart evil conspiracies. However, a scientist loyal to her devises a terrifying plan targeting her deepest private desires. Analyzing all of Miss Marshal's behavioral data, the scientist creates a custom-made villain and teams up with a criminal organization to launch a nightmarish assault. Their goal: to shatter the proud heroine's dignity and degrade her into a lewd, humiliated sex slave. Can she overcome this challenge and preserve her pride?