Having systematically destroyed all the protective soul stones in Japan, Hiyou reveals his plot to gather alter egos together and unleash a massive wave of negative energy that could threaten the entire country. The last soul stone is in Okinawa - the stone once guarded by Makana and Kakuma's family. With Kuro and Keita detained at the resort and Kakuma captured by Tribal Ends, Makana's ready to step up and defend the pure place of his fallen relatives. But a lone Mototsumitama may not have the strength to oppose the evil at work...