Based on the life of screenwriter Yuen Kai-Chi, the movie tells the story of an acclaimed film writer who's got the World on a string. Tragically, his life changes when he gets in a car accident and loses a leg. However, every cloud has a silver lining and he ends up falling in love with his nurse Cindy. Using love as the binding tie, the two face life's obstacles as if it were a three-legged race: two people working together with three legs.

　　阮绩智（张家辉 饰）是一位业界小有名气的编剧，刚刚夺得了最佳编剧奖，前途一片光明。事业丰收的他在情场上亦十分得意，女友雯雯（车婉婉 饰）美丽可人，两人之间感情十分要好。就在阮绩智踏上人生巅峰之时，一场突如其来的车祸让他顿时跌落谷底，他不仅失去了工作和女友，还失去了一条腿。

　　在阮绩智最失意的时刻，是温柔的护士辛迪（朱茵 饰）不离不弃的陪伴在他的身边，随着时间的推移，两个性格和经历大相径庭的人，最终走到了一起。然而，他们所要面对的前路却并不平坦，接连发生的意外和挫折让两人不禁开始怀疑，自己是否做出了正确的选择，真爱之下，一对有情人能否走到最后？