War of the Ninja Monsters: Jaron Vs Goura

Two men, tired from work, visit the town of Chichibu to enjoy their favorite hobby - exploring caves. But little do they know, the town has been secretly protected by the descendants of the righteous Shinobi ninja since the Sengoku period. The two unlucky friends accidentally break a spell that awakens two colossal beasts, Jaron and Goura.