Little bird Bubu is always happy, until its owner brings home a mechanical bird that can sing and serve as a timekeeper. How can Bubu's position being replaced by a fake? A fierce rivalry ensues after the owner leaves home. Who will win then? The result will soon come out upon the owner's return.小鳥Ｂｕｂｕ原本幸福快樂，為什麼突然感到非常煩惱呢？原來主人買了一個新玩伴，此玩意兒是一個會報時又能發聲的機械鳥。Ｂｕｂｕ認為自己的地位又怎能被一隻機械鳥所取代呢？當主人應約外出後，一場爭寵大戰正式展開。結果誰勝誰負？主人回家後自有分曉。
