While on a trip to Mexico, Dr. Do To-Ran finds out his rival, Professor Ji Gu-Bon has discovered something amazing: A lost Mayan pyramid! Seeking to share in his rival's glory, he instead finds him…
Do To-Ri Springs into action once again to find one of Spain's most revered treasures! Distracted into losing a chess competition, our small protagonist, along with his father and sister, soon find…