The world is full of dangers, especially for those who are fragile: for a paper boat, which can be dissolved by the first rain, for a little helmet that can not fly. Among them, however, perhaps because of the common weakness, develop unrestrained friendship. Together, sailing the city fountain, they will try to understand the miracles of the dangerous and wonderful surrounding world: fireflies and balloons, bird singing and people who, tossing coins into the water, still hope for happiness. And in the end it will show that the world knows how to be gentle to gentle ...