Mask is based on the 2005 Korean drama “Resurrection”. Set in the 1930s in Shanghai, the drama tells the story of special police officer Xu Ji Fa (Ethan Li) who was separated from his younger twin brother as a child. While uncovering a bizarre case, Ji Fa meets his brother again, and the two learn that their family is entangled in a big conspiracy.
In the spring of 1931, after the Communist Party successfully set up many communication stations in China, they set their sight on Western Europe and assigned two of their agents ”Asthray'” and “Porcelain” to Paris. From there on, the stories of secret deal, hidden betrayal, questionable death, forbidden love, and brotherhood among the military and a prominent family’s members were unraveled.