Aboard the Black Whale, the Kakin Empire's war of succession has spiraled into a gruesome spectacle of Nen-fueled carnage. As Kurapika maneuvers through the dangerous escort mission, the Phantom Troupe relentlessly hunts Hisoka across the ship's massive decks. When Longi unveils the hidden truth behind Beyond Netero’s true agenda regarding the royal line, the fragile balance of the succession war shatters. Survival hinges on calculated betrayal and brutal power, as the ship becomes a powder keg of greed and ancient secrets, leading all participants toward a cataclysmic confrontation in the middle of the endless ocean.