What starts out to be a bummer of a summer for a rebellious teenage boy turns into one of the most action-packed vacations of his life. When Sandy is sent to the Florida Keys to stay with his salty Uncle Porter, he never dreamed he'd become best mates with a feisty, orphaned dolphin whose life he saved. Sandy and Flipper get into some high seas antics and thrilling escapades, fighting dangerous enemies and making new friends. Sandy's special relationship with Flipper helps clear the decks for a closer bond with his well-meaning uncle, and a whole new outlook on his own life.