What would you do for someone you love?

Helping your friends so often goes horribly wrong. When Charles asks for help, Jehanne gives it. When the Hollowbone is stolen, Jack goes after it. When Jack disappears, Jehanne follows.

The chase leads from home back to home again, but it's a place they've never yet been.

Old loyalties are challenged, ancient boundaries crossed, old friends wake up, and they discover the Hollowbone is not just an ancient bone flute.

In the wrong hands, it could destroy far more than the lives of those who seek it.

No one is trying to save the world, they're trying to save each other.

Then they discover those two things are connected.