Torako Koshi has scrubbed every trace of her delinquent past to become the perfect honor student at Hino Minami High, until transfer student Noko Shikanoko arrives with deer antlers and a nose that sniffs out anyone's secrets. Noko exposes Torako's old reputation within days, dragging her into founding a deer club with first-year Meme Bashame, who decides she wants to become a deer too, and Torako's younger sister Anko. Absurd rules, animal-instinct gags, and Noko's total disregard for social norms turn Torako's quiet reinvention into constant chaos.