Cao Dewang (Cao Bingkun)'s wife passed away, leaving only one son, Cao Sheng (Tian Haoning). The father and son relied on each other. An accident broke the tight but happy father-son life of the two. Cao Dewang had to place the underage Cao Sheng into a welfare home as soon as possible. To this end, Cao Dewang needed to issue a non-biological certificate. The story behind this father and son was only gradually revealed...