Amihan lives with her sick mother on an island where the sea is as blue as the sky. It's all she knows and loves, but the arrival of a cruel government official, Mr Zamora, changes her world for ever. Her island is to become a colony for sufferers of leprosy. Banished to an orphanage across the water, Ami meets a honey-eyed girl named for butterflies, and together they set out to find a way back home to the island at the end of everything.