Inspired by the amazing true story, a boy named Sawyer (Nathan Gamble) discovers an injured dolphin, who is brought to a marine hospital and named Winter. Unfortunately, her injuries cost Winter her tail, without which she may not survive. But with Sawyer's devotion, a marine biologist's (Harry Connick Jr.) expertise and the brilliance of a prosthetist (Morgan Freeman) charged with creating a new tail, Winter receives a second chance at life. The film also stars Ashley Judd, Kris Kristofferson, Cozi Zuehlsdorff, and Winter as herself.