Finally home once more, things seem to be mostly going well for Dahli. But for Draephus there's a steadily growing darkness as he slowly unravels the mystery of who is trying to murder his friends. The final key in the lock are the sirens of Avalair, leading to an answer as heartbreaking as it is disturbing. While Dahli does her best to get to the Year End Festival in Charlendine, Draephus must face his biggest betrayal.