Pay it forward

The story of a social studies teacher who gives an assignment to his junior high school class to think of an idea to change the world for the better, then put it into action. When one young student creates a plan for "paying forward" favors, he not only affects the life of his struggling single mother, but he sets in motion an unprecedented wave of human kindness which, unbeknownst to him, has blossomed into a profound national phenomenon.