Li is a meticulous person, but other people think he is rigid. After getting the death certificate of his mother, he starts to reflect on the meaning of life and his lifestyle. He also rethinks how he should handle the twisted theories and complicated interpersonal relationships in daily life. Will he stick to his principles or will he compromise? 李德生為人循規蹈矩,處事一絲不苟。在別人眼裡,他只是個不懂變通的人。自從拿到了媽媽的死亡證後,德生面對人生的轉變,反思生命及生活的態度。他開始思考應如何處理人情世故,究竟繼續堅持擇善固執,還是需要隨波逐流呢?