Cen Buming has been mute since he was a child. He sells roasted sweet potatoes at a stall in the night market, and everyone looks down on him. Until a group of robbers rushed into the night market and pointed their guns at a little girl. Everyone fell down, except Cen Buming who rushed up to block the shot. On the day he was discharged from the hospital, a reporter stopped him and asked him, "What were you thinking at the time?" He gestured in sign language, and his sister translated: "He said that girl looks like his daughter." Everyone was in an uproar - a mute who didn't even have a wife, how could he have a daughter? Only Wen Niantang stood outside the crowd, trembling all over. Ten years ago, she anonymously reported a human trafficker. When the trafficker was caught, he was tightly protecting a baby boy who could not cry in his arms.