Yaiba Kurogane is determined to become a true samurai, but things take an odd turn in the jungle.

Yaiba has come up with a plan and is willing to do nearly anything to provoke Onimaru to a duel.

Onimaru now wants to fight Yaiba, but something's off, not least the horns sprouting from his head.

Yaiba has the Raijinken but it's the Thunder God that turns the tables on him. Then there's Onimaru.

Yaiba and his companions finally reach Ganryujima, where they encounter Mr. Spider — and a resurrected, but somewhat peeved, Sasaki Kojiro.

Yaiba and his companions storm Onimaru Castle, but they fall through a trap into the depths of the stronghold and face Onimaru's new henchmen.