Anna lives on remote Windrose Island, caring for its birds. When her stepfather Caleb is arrested for smuggling, she must prove his innocence. The truth may lie on board the Albatross, a missing whaler. Anna and her friend Mina travel the high seas to find the lost ship before ruthless Society Man, Bartholomew Rime ... But without a map, only migrating birds and the song of whales can show the way.