When Fae warriors descend on her village, Elera offers the only thing she has left to save her sister: herself. Whisked away to a realm she never knew existed, Elera becomes a "guest" of King Haldorin—a fallen God of Death cast out for a forbidden love. His kingdom is a gilded cage, cursed to vanish for ten years at a time. Elera has only months to escape before the shadows swallow her and the island forever.