A champion surfer loses her left arm in a terrifying shark attack, but summons the determination to make an incredible comeback in this inspirational sports drama based on an incredible true story. A lifelong surfer who always felt at home in the sea, Bethany Hamilton (AnnaSophia Robb) honed her surfing skills in Kauai, and went on to compete in numerous surfing competitions. Then, one fateful Halloween morning, the wave-riding teen was taking part in a national surf competition when a 14-foot-long tiger shark emerged from the depths and changed her life in the blink of an eye. By the time Bethany reached shore, her left arm was almost completely gone. But just when it started to look like she would never ride a surfboard again, young Bethany used her faith and determination to reclaim the title of champion while being cheered on by her supportive parents (Dennis Quaid and Helen Hunt), and Sara (Carrie Underwood), the kind-hearted leader of a local youth group.