Detective Ben from NYPD's 15th Precinct investigate homicides within their precinct. After learning that he is from another planet, a warrior named Michael and his friends are prompted to defend it from an onslaught of extraterrestrial enemies. A family is attacked by demons and only two members survive - Tyler and his sister Nezuko, who is turning into a demon slowly. Tyler sets out to become a demon slayer to avenge his family and cure his sister.
