What happens to the food we digest after it leaves our body? Is it waste that is thrown away or a resource that can be reused? In search of answers, director Rubén Abruña embarks on an investigative and entertaining search through 16 cities on four continents. He follows the trail of feces from the long sewers of Paris to a huge sewage treatment plant in Chicago.

En fræk fe fra skoven og en dreng fra storbyen griber til handling for at redde naturen – og undervejs opdager de venskabets kraft.