Fourteen-year-old cousins Gwen and Vic have lived together ever since the mysterious deaths of Gwen's parents and the disappearance of Vic's mother—until Vic's scientist father accidentally transports them through a magical crystal door to the island of Elantya. Cobblestone streets and silver towers mark the picturesque island, a trading hub and center of knowledge, which functions on a combination of advanced physics and sorcery.
Vic and Gwen are soon caught in a tempest of ancient magic, vicious creatures, and fierce battles—all connected to a territorial feud with the sea-dwelling merlons, an age-old conflict between the bright and dark sages . . . and the cousins' own mysterious roots.