A school teacher arrives in MIlan to work at an elementary school in which he is reunited with his childhood friend also a teacher there. When the teacher falls for a substitute who later jilts him, he joins up with his friend who has a penchant for making inventions. Soon, they come into a lot of success for the gizmo, but the teacher sentimantally foregoes his rights to the patent and returns to teach the children he so dearly cares about.