We are surrounded by society’s unspoken rules like a bird in a cage. But who gets to decide those rules of morality? Ka Tong is a teacher withdrawn from others, including his wife. Eventually, by getting to know a rebelous student, the student teaches Ka Tong to reflect more on his life.我們總是被社會的制度和常規綑綁，如同一隻籠中鳥。但道德和常規是誰定立的了，又有誰可以來決定對錯？嘉同是一名中學老師，他總是和別人保持一定距離，包括他的妻子。卓文是一個叛逆的學生，不甘活於規條和制度之下。當嘉同擔任卓文班的代課老師時，卓文的行為衝擊了他的內心，兩人漸漸熟悉。同時，淑琴也在思考著她的婚姻關係。三人的關係無聲地糾纏在一起，帶來無限愁緒……
