In 20XX...There was a global conflict, and violent crimes were rampant in the rebuilt Second Tokyo City. - Tsukumori Mio, the female police chief of Tsukima City, is a female police chief during the day and judges evil by law. - At night, she wears a special reinforced suit left behind by her late husband, ruthlessly exterminates evil that cannot be judged by law, and protects public order in Tsukima City. - Wearing a reinforced suit, she is known in the streets as Darkness Darc, and has gained charismatic popularity among the citizens. - On the other hand, she was an extremely loathsome and loathsome presence to the evil that spread throughout the city. - A small circus group comes to town. - The circus group was suspected of being involved in a series of kidnappings. - Unable to trust the corrupt organization, she becomes Darc and infiltrates the circus. - However, Darc lets his guard down and falls into the trap of a circus group and ends up being turned into a spectacle... - [BAD END]