On a freezing night when temperatures drop to minus nine degrees, food delivery driver Zhang Shoutian rescues an abandoned little girl, Zhao Nian, beside a trash bin in the old town. Despite his financial struggles, he withstands the pressure and adopts the child. From then on, his once-impoverished family begins to experience one stroke of good fortune after another, and their home is filled with warmth. However, after the girl's parents pass away, her uncle, who is her guardian, turns the custody dispute into a fierce battle. Facing harassment and coercion from greedy relatives, her rough-around-the-edges adoptive father protects her with his life. With ordinary but genuine love, he shatters their schemes driven by self-interest, bringing to life a deeply moving story of protection and redemption.