In the aftermath of long-dormant pacts, the young ninja trainee Midou Miko takes on her first direct assignment to contain fresh unrest from the underworld. Relying on her clan's blend of martial prowess and arcane techniques, she navigates tense encounters that test her growing skills. As rival forces probe for weaknesses, Miko works to restore order and keep otherworldly influences from spilling into everyday life. Her quick thinking and determination set the tone for the challenges ahead.