Natsumi (Ai Takeuchi) is forced to work in a steel factory notorious for employing women with 'dark pasts' in order to pay off a debt. When one of the workers fails to follow instructions, the chief of security rapes her. Natsumi is next on his list, but when she tries to fight the insanity she is hindered by the factory president. It is up to Natsumi to take on the evildoings of the factory.
