Ten-year-old Ginny and her mother are opening up the cabin where her family stays during the summer. On an otherwise quiet day, Ginny hears a male loon, Yudel, sparring with a younger bird over territory. Canoeing with her friend, Wes, Ginny discovers a loon nest on an island. They quickly find themselves protecting the defenseless eggs against predators. During the summer, the loons raise three loonlings. Now faced with many dangers, Yudel and his mate, Owala, will put their courage to the test. Follow the journey of Ginny and the loons as their stories unite . . .