It's the summer of 1900, and 10-year-old Robert Pettibone is bored. His parents have sent him to stay with his Aunt Maudie in Galveston, Texas. She doesn't let him do anything by himself. When a storm comes up, he rushes to the beach to take a closer look. But this is no ordinary storm, it's an enormous hurricane headed straight for Galveston. Raging winds and rising floodwaters threaten to destroy the entire town. Can Robert and his aunt survive the worst natural disaster in U.S. history?