Archaeologist Dr. Daino explores ancient ruins worldwide with his son, Taiga. During their South American expedition, they uncover a 50-meter-tall stone bird statue at an archaeological site. The statue unexpectedly awakens, revealing itself as the living entity Oobats. Oobats possesses the potential to become a catastrophic weapon if it acquires the relic known as the Ooparts Egg, threatening the entire universe. Dr. Daino's mission becomes a pursuit across the continent, aiming to secure the Ooparts Egg first and neutralize its destructive power.