As Pippi and the Native American boy, Yaxiu, embark on a new adventure in the American Great Plains, they encounter unexpected weather phenomena. Suddenly, the sky, once enclosed by fences, begins to thunder, lightning strikes, and even hail falls! Amidst the chaos, the most severe weather emerges: a devastating tornado! With the tornado rapidly approaching the nearby city, can Pippi and Yaxiu save everyone from its threat?

皮皮和印第安少年亚修在美国大平原展开全新的冒险，没想到，原本围栏的天空突然开始打雷、闪电，甚至下起了冰雹！惊魂未定之际，最恶劣的天气竟然紧接而来，正是破坏性十足的最强旋风——龙卷风！龙卷风以飞快的速度朝着附近的都市前进……皮皮和亚修是否能在龙卷风的威胁下拯救大家呢？