In 1939, Shanghai, intelligence agent Gu Yin Shan kidnaps blind cryptography expert Li Yue Se to stop his work. Actor Ding Yi is pulled into the situation when hired to impersonate Li Yue Se. Gu Yin Shan must keep Ding Yi in the role while posing as his assistant, leading to numerous challenges and hidden secrets in their high-stakes mission.(Source: TMDb)