One day, Nana, who has embarked on an investigation, goes missing.She took advantage of the opportunity to send her junior wrestler Mika (Mochizuki Ayaka) a message containing her black head's important secrets.Desperate to help Nana, she consults with the president of her agency, but she is treated carelessly, perhaps because she doesn't want to be involved in the incident.Mika reluctantly calls the Investigative Bureau, but the person who answers the call is Aramaki, a corrupt detective who is connected to Kurogashira behind the scenes.And she will be targeted by Mika herself...