When Eric Siegen and his family invite Hattie Marshall on a trip to New Orleans and Grand Isle, she anticipates adventure. She sees porpoises, eats beignets, and visits St. John's cathedral -- all for the first time. But when she and Eric follow young local Tom Guidroz on a hunt for buried treasure on a barrier island, both Tom's attitude and the weather become unbearable. As an unexpected hurricane ravages the Louisiana coastline without warning, Hattie and Eric must survive in a dangerous and unfamiliar environment. In so doing, they experience the agony and the satisfaction of rebuilding after a storm. And Hattie learns important lessons about love, friendship, and God's ever-present care.