Wu Xie unexpectedly discovered the Shadow Clan silk book left behind by his grandfather, and formed an iron triangle with Zhang Qiling and Fatty Wang. They successively explored the cold pools of Changbai Mountain, the Xisha Shipwreck, and the ancient tombs in the Yunnan rainforest, uncovering the Shadow Clan's secret of immortality and Wang Zanghai's conspiracy. Zhang Qiling also used this to retrieve past memories of his identity as a guardian. The Iron Triangle broke through dangerous situations along the way and faced the secrets that had been buried for thousands of years.
