Will their new allies help Gwen and Vic survive, or will fate balance the scales in a war between sea and land? From New York Times bestselling authors Rebecca Moesta and Kevin J. Anderson Gwen and Vic are still learning magic and science on the island of Elantya, when they learn that Vic's lost father has finally made it through the crystal doors to their new world. However, their excitement is short-lived when they are kidnapped by their underwater enemies and taken beneath the sea. Imprisoned there, forced to witness battles among sea monsters and face the dark sage Azric, they discover a scheme that could bring Elantya to ruins. Can they escape in time to save the magical island from destruction? Or will their enemies finally win?