On a perilous adventure across a post-apocalyptic world, a lovable boy who's half-human and half-deer searches for a new beginning with a gruff protector.

Forced out of his research group after conflicts with his colleagues, Ogawa Takanobu takes up an offer to teach at a girls' high school in Nara. When taking roll call on the first day one of his students, Hotta Ito, sneaks into class late, claiming a bogus excuse--that she got a ticket after trying to park her deer in front of the train station.