In northern China during the early years of the Republic, war rages and warlords divide the land. Folk tales abound of ancient tombs, hidden treasures, and strange happenings. Bound together by the twists of their own fates, the protagonists embark on a quest for the “Fallen Land,” a perilous place said to hold secrets from the dawn of time. The Fallen Land is no ordinary burial ground but a cursed region where, they say, no one who enters ever comes out alive. Legend has it that the Fallen Land conceals a “Fallen Key” capable of unlocking the mystery of life and death. Countless tomb raiders and explorers have ventured in, but none have ever returned.