The 33rd entry in Toei's Super Sentai franchise. For eighteen generations, the Shiba household have protected the world from the evil forces of the Gedoushu - monsters that enter our world through cracks and plan to flood the world with water from the Sanzu river (which is essential to their survival). In present day, their leader Doukoku Chimatsuri is freed from his seal and intends to continue this ambition. Takeru Shiba, the youngest head of the Shiba clan and ShinkenRed, must gather together his four vassals (servants from other households) to fight the forces of the Gedoushu. Initially Takeru maintains aloof and detached from his vassals, preferring to fight alone. But as the story progresses and Takeru's childhood friend Genta joins the Shinkengers as ShinkenGold, Takeru becomes far more comfortable around people, beginning to treat them as friends. But Takeru is different from the lords that have preceded him, and the vassals slowly learn that his dark secret may be the...