In the bustling city under the midnight sky, an ordinary office worker, Su Qianqian, finds herself tangled in a forbidden romance with a mysterious fallen angel. As she is pulled deeper into a world of supernatural forces, Qianqian realizes she holds the key to an ancient power that connects two realms—the mortal and the supernatural. With the enigmatic fallen angel Luo Ye at her side, she embarks on a journey filled with danger, self-discovery, and a love that defies the rules of both heaven and hell. Together, they must face both demons and the fallen to awaken the "Pure White Wing"—a legendary force that could grant Luo Ye a new fate and ensure their love will survive beyond the midnight veil.