A small boy, sitting near the train window, plays with a windmill. The middle-aged man is reminded of his childhood, when he cherished ambitions which have never been fulfilled.
這時，有個小男孩坐在車窗之旁玩風車，車窗開著，風吹動風車不停地轉動… …，由這個孩子，以及風車轉動的形象裡，男主角憶起了自己的過去，自己在童稚時期，玩風車時，所產生種種美麗的憧憬，與偉大的抱負… …