SDMU-969 Undercover narcotics investigator chan-yota was pickled in salt and gang-raped

One day, Chanyota, a female martial artist with a winning streak, finds out that the trainer she admires is addicted to drugs. She tries to stop her, but after she is raped by a frenzied trainer, her gym is fired and her martial arts career is closed. She infiltrates the hideout as a narcotics investigator, but is captured. And the men under her attack one after another.