The intertwined worlds of Oceanlight and Earth are no longer hidden from view of each other. In one realm, Yalara Narika, a winged Sea Sprite, searches for her family and she encounters a deadly blue haze at sea. Escaping the poison makes her realize that her world, Oceanlight, is experiencing sudden and catastrophic environmental change. Meanwhile, in the safe suburban normality of North Wales, Einion Morgan Alban, a restless youth with haemophilia, is nearly murdered by a man in a white suit who intentionally shoves him off a cliff. If Yalara and Einion don't uncover the connections between their worlds and near-deaths, it' will have dire consequences for the worlds they live in.