When we first met at Tongquetai, he was the minister who was careful at every step, and he was the prince with a sword pointed at his throat. An alliance that began as a conspiracy bound two people with blood feuds together. He blocked the poisonous arrow for him, and he made a bloody speech for him in the Golden Palace. When the truth about the massacre that had been buried for twenty years and the mystery of their life experience were revealed together, they learned that the so-called old enemy was actually a twin star connected by blood. Should they sink into the blood feud, or work side by side to rewrite the broken mountains and rivers? On the day when the twin stars shine together, the world will return to its center.