After being cruelly set up and deceived by Sugimi (Natsuyagi Isao), a conniving and crooked detective she had whole-heartedly fallen in love with, Matsushima Nami's desire for revenge knows no bounds. Her failed attempt at stabbing Sugimi on the steps of the Tokyo Metropolitan Police Headquarters results in her doing hard time in a female prison run by sadistic male guards. To Sugimi's surprise, Matsushima refuses to testify against him and his connections to the mob, and now the sheer fact that she knows such secrets makes her a liability. So Sugimi an