Wang Chengran, a young man from the frontier army, seized the ancestral remnant seal that could reveal the truth about military aircraft and bloodline on the night when his family was exterminated. He thought the enemy was outside the city, until he discovered that the man who raised the butcher knife actually came from his own clan; in the war of troubled times, he and Shi Shixi moved forward step by step between betrayal, marriage, power seizure and national war, trying to carve out a royal flag that truly belonged to them from a family conspiracy.
