Since the Tear that put an end to the ancient world, people have lived on Arks suspended in the air. Each of them, inhabited by families with peculiar talents, is led by a remote ancestor, called the Family Spirit. The young Ophélie is a Mirror-Visitor, a rare ability among the inhabitants of the Anima Ark: she can move from one place to another by crossing mirrors. Clumsy, solitary, and reserved, she is also a particularly gifted reader, able to feel the past of any object just by touching it.