During the Western Zhou Dynasty, a century-old celestial phenomenon once led to a great drought in the world, and a strange person in the world occasionally obtained an unknown spar in the realm of the mountain and forged two peerless weapons. In the Spring and Autumn Period, the sword master Kong Zhou of the patriotic Tibetan swordsman was obsessed with swords, and he got these two swords, and accidentally witnessed the existence of the "derivative sword" of the sub-sword, and regarded it as a treasure, so he called the three swords "the three swords of Yin Tianzi". In his twilight years, Kong Zhou handed over one sword to his swordsman, and the sword-sealing master sealed the remaining two swords after his death, and his whereabouts are unknown. A thousand years later, the news of the three swords on the rivers and lakes was unintentionally leaked in the Weizhou Huanmei Villa, and the owner Zuo Zhong knew that he had suffered a catastrophe, and fled to the northwest Futu City with the secret of the strange sword······