After three peaceful years since the epic showdown in Yamato Takeru, tranquility reigns once more. Takeru, Oto, and their companions enjoy idyllic days in their village until the ominous return of Shuranoo, under Mikazuchi's control, shatters the peace. To protect his loved ones, Takeru must awaken the dormant Susanoo. Yet, this revival heralds the emergence of a fresh peril, compelling Takeru to face his inner struggles to save Oto from imminent peril.