因女友自杀而患上抑郁症的警察阿斌（祖峰 饰）和搭档磊哥（陈明昊 饰）在调查一起碎尸案中，与被害者的姐姐李雪（黄璐 饰）相识。李雪自称梦见弟弟被人杀害。在调查过程中，阿斌发现李雪痛失女儿并患上抑郁症的悲惨经历，两人彼此怜悯，相互理解。 这时，在城市漂泊的少女婷婷（张倩如 饰）也渐渐走入阿斌（祖峰 饰）的生活，和他产生说不清的牵绊。 孤独的少女、备受抑郁症折磨的患者，他们都该如何面对自己的内心，又该如何在这个世界寻找光明……A-Bin is a police detective. During the investigation of a bizarre murder case, he meets Li Xue, a surgeon. As they get to know each other, A Bin happens to be more and more attracted to this mysterious woman, while both are struggling with their own love stories and sins. Could a love affair help them find redemption?
