On July 7, 1937, the Marco Polo Bridge Incident broke out, and the Japanese army launched a full-scale invasion of China.
While on a mission, agent Nan Fengcai ran into his brother Nan Fengjin, who was captured by the Japanese eight years ago.
The upright and gentle boy in my memory has now become the son of the prince of the Kyoto royal family.
The war continues to expand the hatred between the two nations, but the love between brothers becomes more and more profound.
The more they want to stay away from each other, the closer they are pushed by fate...
Around a top-secret file called "Emperor's Heir", an agent code-named Ghost surfaced
Ambassador translator Nan Fengjin, Central Unification agent Nan Fengcai, cryptographic genius Li Hai, clinic doctor Li Yi
Everyone seems to have a dual identity, half devil and half angel.
A huge conspiracy is slowly unfolding towards them, shrouded in darkness, the enemy and ourselves are unknown, and their identities are blurred.
Love and family affection, national hatred and family hatred, which one is more heart-wrenching?