In 1947, underground party member Chen Mo betrayed his comrade Lin Yue under electrocution and was stigmatized as a "traitor" for the rest of his life. He spent twenty years transforming into "Uncle Chen", a small town watch repairman, to raise Lin Yue's orphan Nian Yue. When Nianyue accidentally discovered the "traitor" file, the relationship between father and son collapsed instantly. However, this is just the tip of the iceberg. In the process of pursuing the truth, Nianyue discovered that Chen Mo's "atonement" was far beyond imagination - he kept his name anonymously, secretly protected the "Spark Project" left by the organization, and used his most exquisite watch repair skills to build an intelligence transmission network. The identity of a traitor is protective, and the love of a loving father is salvation. In the end, the grievances and hatreds of the two generations moved towards understanding and reconciliation in the age of blood and fire.
