An investigator from the Ling Guo Investigation Bureau is murdered, and her friend is identified as the killer. The Investigation Bureau immediately sends people to find the killer, and a mysterious secret agent organization is also hunting down Qu Xiazhi. Knowing that she has been framed, Qu Xiazhi has no choice but to search for the secret of the real killer while on the run. Unexpectedly, she meets Claire Lin, her lover whom she has not seen for five years, during her escape. With their seamless cooperation, they successfully treat the seriously ill child within the deadline and finally eliminate the real killer.