Forbidden … and yet. The black vial calls to you. "Mark my word," Dr. du Monique said, "One third of your team will fall to Midnight-and this black vial will be the cause of it." Robyn, Kit, and Cam are called to be on the Elite Skyborn Warrior Team, but the Legend's prophecy points a guilty finger-three of the nine are destined to turn on the prince. They swear none of them would ever fall, but the vial has a secret, mesmerizing appeal. While learning to control their powers, their younger siblings, Shirley, Grace, and McCoy, are taught to spy on suspected magic-users and turn them in to the police. When the older kids discover a plot to kill Mr. Fischer, they must use advanced skills they've secretly cultivated-skills that could push them over the edge into Midnight. Will they be the ones to fall to the dark side, or will their younger siblings have them arrested before their mission is complete?