 In the middle of Rin and Bat s marriage ceremony, Rin is kidnapped by a masked warrior named Jadô. Word gets out to Kenshirô that she is being held by the "Dark Hokuto". He learns that there is a third branch of the Hokuto fighting style, Hokuto Mumyô Ken. Kenshirô and Bat set out to rescue Rin and her twin sister Rui from the Hokuto Mumyô Ken master Zenô.