He wakes up one morning to find that he has become a Taoist priest! At first, he thinks it must be a joke played by fate, but the ghosts and monsters that keep appearing soon make him realize this is a fight for his life. Armed with a peachwood sword and dressed in Taoist robes, he embarks on a perilous journey through the narrow divide between the worlds of yin and yang, slaying ghosts and monsters to protect the human realm. Thus begins a thrilling ghost-hunting adventure.