In the '70s, a Spanish circus stunned the world: Los Muchachos. It was the visible side of Benposta, a republic governed by children in Franco's dictatorship. The main figure behind this was Father Silva, known as "The Priest", a visionary who wanted to educate the children to boost global transformation. This is the story of the boom and bust of one of the most unique utopias of the 20th century.