It is different from The Future It Keeps Coming in that it relates the story of the making of a director. The focus of A Butterfly Flew Past is on her own potential as a director, and how, after becoming Lin Cheng-sheng's wife, she was obliged to become the woman behind the director.
不同於《未來，一直來一直來》是一個導演形成前的故事，《一隻蝴蝶飛過》的焦點放在一個原本有潛力成為導演的人，但成為林正盛太太後，被迫退讓為導演背後女人的故事。