It is a story about disappearance, search, love and hope. In a small town in China, the peaceful life of Zhang Jianguo and Li Hong was shattered by the mysterious disappearance of their 100-day-old son Zhang Xiaobao. Faced with this sudden change, the couple embarked on a long and difficult journey to find their son.
Over time, Zhang Jianguo grew from an ordinary worker to a successful entrepreneur. Despite his success in his career, his heart was always filled with longing and guilt for his missing son. Li Hong has always been hovering on the edge of emotion, and her life revolves entirely around the hope of finding her son.