The unfeeling departure of his first love Li Yandong was like a sudden snowfall in the cold winter, tearing Lu Yiyi's sincerity into pieces. During the long night, his cousin Lu Yinan weaved a warm cocoon with silent protection. She quit her job and changed her life, but met Zhang Haoling, an emergency doctor, and she quietly developed a heartbeat in her trivial daily life. But Lu Yinan always stood in the shadow of the moonlight, burying his turbulent love deep in his heart.