野鳥一次又一次被捕鳥人抓住、販賣、放生，在有限的自由裡掙扎求存。女人在男人主導的社會中求生，不由自主的命運同樣可憐。自小跟著阿嬤在山林長大，常常看鳥兒飛翔、被抓、被放生、死亡，直至一天母親接他到城市的公寓同住。在侷促不安的城市中與母親相依為命，但母親也不過是一隻渴求愛卻受盡傷害的野鳥。為了生活，她當上伺候男人的「酒店妹」；為了愛情，她承受暴力遍體鱗傷。山林的氤氳困住飛鳥，城市的哀號囚禁靈魂。自由只是假象，世界終究是個更大的囚籠，母子也不過求片刻安身。

Young boy Han lives in the mountains with his great grandmother who amuses him with legends about the sparrows in the sky. One day, his mother finally brings him back to the city, but what awaits him is different than what he expected. In his urban home, Han can only watch his mother struggle and suffer as she works as a club hostess and fights endlessly with her abusive boyfriend. Nominated for four prizes at the Golden Bell awards, Shih Li's acute and melancholic drama highlights how the world's a cage for those forced to pass on their pain and helplessness from one generation to another.