By day, Adrian is the ruthless and aloof billionaire CEO of the VALE Group; by night, he descends into the virtual world, becoming a lowly sub, yearning for his dominant master, Obsidian, who mysteriously disappeared two years ago. However, Adrian never imagined that the true master who controlled his soul in the virtual world, making him willingly submit, was none other than his seemingly docile, obedient, and shrewd personal assistant in real life, Lucien.