Rookie dream-cop Elias has hunted the elusive "Nightmare" for a year and always lost — mocked, pinned, and toyed with, yet never once harmed; the dream gem is always taken and always returned. Ordered by Chief Marcus to uncover why the Nightmare keeps breaking into dreams, Elias is suddenly shadowed by the new "dream-safety expert," Lucien Cross, who forces him into a three-part compatibility program — knowing each other's bodies, obedience testing, and resonance testing — and moves him into his mansion. A fall into a dream-within-a-dream shows Elias a Christmas Eve fourteen years ago: in a collapsing amusement park, a 12-year-old Lucien met him, and has searched for him ever since. When Lucien's identity is exposed, he flees to clear his mother Helena's name. Elias awakens his buried memories through a single bell mark — and discovers the true mastermind is Chief Marcus, who stole Helena's "dream lock," faked her death, and framed Lucien. Together they trigger the dream lock's ultimate resonance, expose the truth, and end Marcus — closing a fourteen-year obsession.
