When her first love, Li Yandong, left without a second thought like a sudden snowfall in the dead of winter, he shattered Lu Yiyi’s sincere heart. Through the long, dark nights, her older cousin Lu Yinan quietly kept watch over her, weaving a warm cocoon around her. She quit her job to try a different way of life, then met Zhang Haoling, an emergency room doctor, and found herself falling for him amid the little routines of daily life. Meanwhile, Lu Yinan remained in the shadows of the moonlight, burying his overwhelming love deep in his heart.