The Pirate and the Princess

Princess Ella was captured and raised by pirates. She has lived on their ship since she was nine and doesn't remember that she was a princess. But when she is sixteen, the pirate ship returnes to her kingdom and captures her sister, Princess Madaline. Now, Ella must find a way to get her sister to safety, and choose between living the rest of her life sailing the seas, or going back to a family she can't even remember.