After returning to Beijing to recuperate, the best trio in history, Hu Bayi, Wang Fatzi and Yang Daring, reunited because of the Great Golden Tooth's advice from Gu Benshan Customs Chronicles and Professor Chen's commission to find the ancestral grave. They went to Shanhaiguan to solve the seemingly simple but actually dangerous task, and encountered many difficulties on the way, such as man-eating trees, corpse oil rivers, and yellow skins.