Houchiku Corporation's film production workforce includes Mitsuki Ikuta, who's responsible for producing movies. Despite being judged as significantly immature by others due to her inclination for childish clothing, Mitsuki has a passion for detective movies. However, she's given the task of overseeing the production of a new "hero movie" under her guidance, a class usually connected with childishness, that comes as a surprise to her. Yet, Mitsuki remains determined to succeed and agrees to take on the challenge.