The story opens in the year 20XX, at Oshaka School in Kamakuland, a prestigious institution that admits only those who are pure and clear‑headed descendants of Priest Sanzo’s clan. The notorious villain trio, who firmly believe themselves to be genuine descendants of Priest Sanzo, in reality have uncertain lineage. They study hard in hopes of gaining admission, yet repeatedly fail. One day, the principal summons three intelligent children and, through Shakyamuni inhabiting his body, instructs them to locate missing puzzle copperplates scattered around the world and assemble the puzzle board to elevate Oshaka School’s honor. The villain trio overhears this conversation and sets their plans into motion.