Hotel Castle's 71st floor gleams with blood not yet dry. Kim Shin stands among the fallen, sword still humming in his grip — not from exhaustion, but from the weight of what he just seized. A decade of building Baek-Yi from nothing: recruiting the deadliest killers, weaving through power's cracks, betraying and being betrayed. Now Castle, the mega-organization that spans the mafia, yakuza, triads, and cartels across all of Asia, has a new leader for the first time in living memory. He is the pinnacle.

But the throne is cold steel against his spine. Pinnacle is not a reward — it is an arena where ruling means deflecting knives from every direction. Choi Min-wook, the defeated former chairman, refuses to accept dismissal. From exile, he stitches together a rival alliance with Japan's Iwashiro yakuza and Hong Kong's triads. Two colossal factions now face each other: the Old Castle Alliance versus the New. Kim Shin must test himself no longer as a vengeance-driven executioner, but as a general in an all-out war. Can he survive when the entire underworld understands that the pinnacle is the most dangerous position to occupy?

Also known as: Castle 2: Manin Jisang, 캐슬2:만인지상, Castle II: Pinnacle.