After forging his mother's signature for a cave expedition, Jordan gets trapped underground-but his near disaster leads to an astonishing discovery: a glowing stone that transports him to the breathtaking world of Elatia in his sleep. There, he meets Kaylaira and learns of the MonTu, ruthless invaders who purge the land every eight years to steal its power. But Jordan isn't just a visitor-on Elatia, he is a Wind Driver, a legendary warrior with the power to command air itself. As the next purge looms, he must uncover the truth behind the bijous and decide if he has the strength to save their world... before time runs out.