To infiltrate a loan shark organization, female spy Mizusawa Maki carries out Operation M. However, the plan goes awry and she falls into a trap, captured and restrained by the gang members. She is tortured and forced to drink large amounts of alcohol, her consciousness fading. Amid the haze, the organization's dark truths begin to surface. Risking her life, she strives to expose their conspiracy, but ahead lies unimaginable torture and a shocking revelation. Can she overcome this brutal ordeal and succeed in Operation M?