Norakuro follows a stray black‑and‑white dog who enlists in the Fierce Dog Brigade, an Imperial army of canine soldiers battling the Monkey Army. Though the brigade is predominantly composed of white dogs, Norakuro, a lone black dog, rises to the rank of Private Second‑Class. The anime remains largely faithful to the original comic series, with one significant addition: the army nurse Miko, whom Norakuro develops a crush on. The character is voiced by Nobuyo Ooyama, who would later become famous for voicing Doraemon.