BETHANY HAMILTON: UNSTOPPABLE tells the story of surfer Bethany Hamilton, who at age 13 was out surfing when she was attacked by a 15-foot tiger shark, a run-in that cost Hamilton her left arm. But not only did Hamilton survive the attack, she was back on the competitive surfing circuit less than a year later. It has been amazing watching her story and see how this young woman has inspired so many. More than a decade later, Hamilton, now a mother, undertakes her greatest challenge: chasing a toddler and the biggest wave of her career. BETHANY HAMILTON: UNSTOPPABLE is the untold story of the heart of a champion and her…