Two people meet one morning in the center of Warsaw - Sebastian, 10-years old boy from a broken family and embittered pensioner, Eugeniusz. Both notice a French tourists lost a 500 francs banknote. There's only one problem: the money fell into a deep manhole, it is not easy to take it. At the beginning they try to outsmart each other. They both want to get the banknote. Later on, they become friends.