Fourteen year old Angel is looking forward to her first summer job, working for a Native American biologist on a local farm. Things change, though, when she visits the farm's ancient forest and is given a liminal stone by the Spirit of the Forests that allows her to travel in her dreams. Angel uses the stone and enters Limbo, an 'in between' world, where she meets Caleb, a teenage boy from Thera, the world of magic and mythology that was separated from Earth centuries ago.

Caleb can do magic and tells Angel that she can, too. Although she has no idea how to use her powers, Angel's...