Set on the fictional continent of Lotri, Infinity Nado 7 presents a vibrant fantasy world where conflicts and alliances among the Thunder Dragon Tribe, Sapiens Tribe, and Blazing Flame Tribe shape the fate of the land. As dark forces begin to stir, the tribes must learn to stand together, conveying the core message of unity and shared destiny.

At the border marketplace between the three tribes, genius Nado mechanic Kareisha sells his self-made replicas of the Sacred Nado. However, Sergio, a young warrior from the Blazing Flame Tribe, accuses him of deception, and their dispute quickly escalates into a Nado battle. Suddenly, Sergio’s older brother Serlo appears, revealing that Sergio is hiding an important secret. Forced to escape the chaos together, Kareisha soon realizes that Sergio seems unusually familiar with the Sacred Nado. Meanwhile, the mysterious girl Lacey watches the situation unfold from the shadows, hinting that the crisis surrounding the Sacred Nado is about to begin once again.