A taxi driver always feels lonely. He misses his late wife very much and dreams about her every night. Drinking fresh milk can relieve his emotion. Every time when he buys milk, the shopkeeper makes him solve riddles. This annoys him...的士司機郭帶全感情生活空虛,每當接載情侶時,內心只有羨慕份兒。為了壓抑寂寞感覺,他依賴飲鮮奶來舒緩情緒。他買鮮奶時,女店員總要他猜謎,令他感到莫名其妙和憤怒。其實,女店員想通過謎底,使他領悟自己的偏執。原來郭的妻子已去世,他常在夢中懷念她。可惜......