The Glowstone (The Rainbow Circle)

Lux Fischer and Sparrow Highwater have a big problem. They’ve grown up reading adventure books. Now, they’re living in one.One day, walking home from school, Lux finds a strange, glowing ring. The magic it contains doesn’t seem to follow any rules. And before she knows it, the ring has transported them on an adventure through time and space — threatening all of reality in the process.That means Lux and Sparrow have to save not just our world, but all the worlds that have ever existed— but can they even manage to save themselves?