The teacher of geography Cherpunov, which schoolchildren nicknamed Chernomor, was a home museum. For lessons he liked to bring unusual things, but most of all - sealing wax bottles, on the stickers of which was written "Water from the Nile", "Water from the Mediterranean Sea", "Water from the Limpopo River" ... Man wants to know the world around him. And the first assistant in this is a teacher, who himself is carried away by his subject to self-oblivion.