After being kidnapped, the race to unlock Jess' powers is even more dire. She crosses into the Unseelie world in order to tap into them, while Fallon stays behind, planning. He must also learn to trust the Unseelie queen with his mate's life and find a way to infiltrate the Seelie king's castle. Each has a job to do, and none can do it alone, some will even have to make sacrifices. Fallon tries to keep his focus on the mission but finds it difficult when part of him is with Jess in another world.