Ten years after my grandfather died, my parents' graves collapsed. The grave was empty, with only a scratch scratched from the inside out. At the same time, the black dragon that my grandfather had given me for eighteen years crawled out of the deep pool and told me three things: I contained the "trap door" that the Yinshan Gate wanted; my parents' souls were trapped under the old locust tree at the entrance of the village; I must take back all three things that my grandfather gave away before July 15th, otherwise the door will not close. But the "thing" chasing me was already waiting on the road.