When Elisapee's father brings home a baby seagull, Elisapee falls in love with the bird right away. She feeds and cares for her new friend, named Nau, and even helps Nau learn how to fly! Nau grows, and grows, and grows some more, until she's big enough to fly all over town and play with the other seagulls. Soon, it seems like Nau is ready to leave home for good, and Elisapee has to learn how to say goodbye.