Three years ago, young lawyer Lu Chengyuan pro bono helped the bullied girl Shen Nian win a lawsuit, becoming the light in her desperate situation. Reunited three years later, Shen Nian lost her voice due to excessive tension and was mistaken for a mute. To resist a commercial marriage, Lu Chengyuan impulsively registered his marriage with her. He does not know his wife is the white moonlight he has searched for three years, and she does not know the light in his heart is herself. Where will a mistaken love caused by an information gap ultimately lead?