By day, Adrian is the cold, ruthless billionaire CEO of VALE Group. By night in a virtual underworld, he is a secret Sub, desperately longing for "Obsidian"—the elusive dominant Master who vanished two years ago. Adrian has no idea that the "Master" who completely commands his soul is actually Lucien, his seemingly submissive, hyper-professional executive assistant.
Lucien is a hidden genius, calculating Adrian’s every heartbeat to gather data to save his comatose mother, viewing his boss as nothing more than a perfect human battery. As Adrian's mask shatters, the boundary between white-collar dominance and midnight submission blurs. In this high-stakes game of control and salvation, the billionaire boss is about to hand over his permanent surrender.
