A new adventure begins for Professor Hieda Reijiro, who is also known as the yokai hunter. On Kami Island, there are strange legends of the Taira clan and the Sea Dragon. After a man goes missing for three days, Hieda goes to visit the island and uncover the truth of these legends during the superstitious Sea Dragon’s festival. Between strange fish washing ashore and intense rituals, this investigation is sure to be a wild ride!