Long Xiao was an ordinary boy who returned home for a funeral, but at the funeral he saw his grandmother's body transform into a strange bird and fly away. Following the clues, he discovered that there was another "real" world hidden in the entire Miao countryside - corpse chasers walked at night, witches cooked insects in the stove, and mountain gods married wives and sacrificed them alive.
And his seemingly kind grandmother is actually the "mountain guardian" who controls all this...
