Song Shoucheng appears to be an ordinary locksmith, but he is actually the young master of the Song family. He meets and falls in love with Su Chunmei, a retired worker, but because he keeps his true identity hidden, he endures the cold stares and mockery of Su Chunmei's daughter, Su Xiaoman, and her son-in-law, Zhao Qiming. The couple ridicule him to his face and scheme against him behind his back, even going so far as to take Su Chunmei's gold jewelry. Song Shoucheng continues to endure everything without revealing his identity. At a company banquet, his true identity is exposed in front of everyone, leaving those who looked down on him utterly stunned. Su Chunmei initially blames him for concealing the truth, but his sincerity eventually moves her, and the two join hands to face everything together.