Special female detective Hanyu Asuka, codenamed 348 (Sashiba), receives a secret mission from the police commissioner to solve the blackmail case involving a genius Famicom designer. As Asuka continues her investigation, she discovers that Hayami, a gangster, is the culprit. However, after a gunfight, Hayami escapes, and a few days later, policewomen are killed one after another, as if in retaliation for Asuka...

Aida, a daredevil detective who isn't afraid of power or challenges. The great evil has begun investigating a major corruption case involving a leading trade company and the nation.