Damn the misery!

Muhammad Yunus, Nobel Peace prize winner, is known in the whole world as the banker of the poor, because he pioneered and tested a funding system in Bangladesh: by lending little sums of money to the less well-off with no interest, and returning it by installments gained with their work, people are able to get free from extreme misery. Thus, what can happen if three boys, just graduated, who live in Naples, try to import this funding system that subverts every economic rule?