The story is set amid the chaos of the Republic of China era. Foreign enemies invade, the domestic situation is unstable, and various factions are deeply entangled. Underground intelligence work becomes a crucial arena for their secret struggles. Countless patriots devote themselves to the cause, risking their lives in battles with the enemy that leave no smoke in the air but are nonetheless full of peril, all to protect national secrets and pass along vital information. Lin Musheng and Shen Yanqiu are brave operatives on this hidden front. Loyal to and in love with their country, they rely on exceptional wit and courage to push forward through the tides of espionage, writing their own stirring legend. They also share a deep and sincere bond, becoming each other's source of strength.
Theme: The courage and historical impact of ordinary people in a monumental era.
