When hotel CEO Julian Ashford acquires the abandoned Eclipse Club, he accidentally awakens Lucian, the Incubus King sealed beneath it for three thousand years. Worse, Lucian's power core ends up inside Julian's body. To reclaim it and uncover the truth of his lost kingdom, Lucian must stay close to the vain, demanding, and unexpectedly kind human. An impulsive kiss, caught on camera, turns them into the city's biggest sensation—and pushes them into a marriage contract that serves them both. As the hotel acquisition, family pressure, and the ancient laws of the Nightborn collide, a relationship built on mutual advantage begins to slip beyond their control. One wants his power back; the other is used to controlling everything. The real danger is who falls in love first.