The story takes place in a boarding school called "The Bottom of the Pond". This school specializes in treating stubborn children. Control method was the most advanced educational method at that time. Classify children through various intelligence and personality tests, and then carry out strict systematic education on problems, including rewards and punishments for action response.

The arrival of superintendent Matthew changed all this. The failed musician finally became an unemployed superintendent and never kept a diary again. But he unexpectedly became the first teacher of a great musician, although he didn't even remember his name.