The story takes place in Dragon Country. Nonoko is a newly appointed dentist and her mission is to protect the dragon, the guardian of the country, from tooth-cavity bacteria. One day, amid increasingly fierce battles with the neighboring country, Nonoko finds on the dragon's tooth an unconscious boy soldier from the enemy country. His name is Bell, and he has been resurrected from inside the tooth by the dragon—a supernatural phenomenon that legend says occurs before a major disaster. As Nonoko and Bell go through a series of fierce battles, they eventually learn to accept their fate.
Episode 1
Bell finds himself resurrected aboard a dragon. He is surrounded by Dragon Dentists — men and women tasked with protecting the dragon’s teeth from cavities as it consumes the souls of its victims in a brutal war between two nations. Though Bell is an enemy to the dentists’ nation, they welcome him. One of the dentists, Nonoko, takes him under her wing.
Episode 2
Bell and Nonoko set out to a local airport, from where they will be ferried back to the dragon to return its tooth. Meanwhile, Shibana quietly sets her own plans in motion. Things quickly take a nightmarish turn.
