Ami lives with her mother on an island where the sea is as blue as the sky. It’s all she knows and loves, but the arrival of malicious government official Mr Zamora changes her world forever: her island is to be made into a colony for lepers. Taken from her mother and banished across the sea, Ami faces an uncertain future in an orphanage. There she meets a honey-eyed girl named for butterflies, and together they discover a secret that will lead her on an adventure home. Ami must go back to the island of no return, but will she make it in time?