In the year 20XX, Oshaka School in Kamakuland admits only pure-minded descendants of Priest Sanzo's clan. A trio of villains of doubtful ancestry believes it belongs to that line and keeps failing the entrance exam. When the principal, through Shakyamuni dwelling in his body, asks three bright children to gather puzzle copperplates scattered across the world and complete the puzzle board for the school's honor, the trio overhears and resolves to beat them to it. The villains bring along a clever boy named Koochan and try to seize plates from a goblin while recruiting it against the heroes. Seeing through their plan, Koochan becomes Itadakiman and fights to drive them off. The show is a mecha entry in the Time Bokan Series.