Summary: They call themselves SYLO and they are a secret branch of the U.S. Navy. SYLO’s commander informs Pemberwick residents that the island has been hit by a lethal virus and must be quarantined. Now Pemberwick is cut off from the outside world. Tucker believes there’s more to SYLO’s story. He saw the bizarre midnight explosion over the ocean, and the mysterious singing aircraft that travel like shadows through the night sky. He tasted the Ruby—and experienced the powers it gave him—for himself. Only Tucker holds the clues that can solve this deadly mystery.