His goal is to help the weak and defenseless, but his saving a mouse makes him the most wanted in all the land. On the run from incessant, dim-witted mice, Perro befriends a young miller's boy, Pierre; together, they decide to seek fame and fortune. When they cross paths with the lovely Princess Rosa, Perro determines to get Pierre hitched to Her Royal Highness.
Aspiring to an easy job as personal physician to a wealthy family, Noboru Yasumoto is disappointed when his first post after medical school takes him to a small country clinic under the gruff doctor Red Beard. Yasumoto rebels in numerous ways, but Red Beard proves a wise and patient teacher. He gradually introduces his student to the unglamorous side of the profession, ultimately assigning him to care for a prostitute rescued from a local brothel.
