An investigator from the Ling State Reconnaissance Bureau is murdered, and Qu Xiaozhi's good friend is identified as the killer. The Reconnaissance Bureau immediately sends people to search for the killer, and a mysterious secret agent organization is also hunting down Qu Xiaozhi. Deeply aware that she has been framed, Qu Xiaozhi has no choice but to flee while searching for the secret of the true killer. Unexpectedly, during her escape, she encounters Lin Cheng, the lover she hasn't seen in five years. With their seamless cooperation, they successfully cure their seriously ill child within the time limit and finally eliminate the real killer.