A crow lives in a big city. The crow has a walnut, but the walnut is hard. The crow cannot open it. Then a car drives over a walnut on the road. Crack! The nut is open.
Now the crow drops walnuts on the road. It waits on the traffic light. The cars stop, and the crow eats. An old man, Mr. Sato, watches. He brings walnuts for the crow. Soon the crow teaches its babies, too.