At Haneulwon, an elite rehabilitation center for the powerful and broken, Park Jimin is admitted as its most volatile patient-an ex-golden boy turned addict, accused of attempted murder and drowning in guilt, rage, and withdrawal. Assigned to him is Dr. Roseanne Park, a brilliant therapist with a spotless record and a carefully guarded past. Calm, controlled, and professional-until Jimin begins to unravel in her presence. This is a story of obsession disguised as healing. Of love that shouldn't exist. Of two broken people standing on the edge of something forbidden. Because sometimes, the most dangerous addiction... is the person who makes you feel alive again.