Lee Seokmin is a name that spreads fear. The second son of a powerful mafia family, he is wild, reckless, and thrives on destruction. Chaos follows wherever he goes, and he has no interest in order-only power. But even the most untamed beasts can be leashed. Enters Yoon Jisoo. A man of beauty and deception, a playboy who indulges in luxury, yet behind his charming mask lies a ruthless manipulator. He doesn't believe in love, only in control. And the one man who should be uncontrollable-Seokmin-finds himself caught in Jisoo's web. But while their dangerous game unfolds, a darker truth lurks in the shadows. In a world of violence, power plays, and mind games, who will survive when the truth is finally revealed? A story of power, desire, and destruction-Obsession marks the beginning of a deadly romance where love and betrayal walk a razor-thin line.