In the year 1589, the Tokugawa clan is looking for a way to destroy Toyotomi Hideyoshi. Hideyoshi depends on the resourceful, intelligent samurai Sanada Yukimura to help him protect his people and foil the plots of his enemies. He also assigns the loud-mouthed, impetuous shinobi Sarutobi Sasuke to work with Sanada -- to their mutual annoyance. Though each disapproves of the other's approach to crime-fighting, they begrudgingly agree to work together for Hideyoshi's sake.