A high-security prisoner transport ship sails from the Philippines to South Korea, carrying the most dangerous criminals for extradition. Unbeknownst to the authorities, several of these inmates have plotted a mutiny to seize control of the ship and escape custody. As chaos erupts on board, tensions among the prisoners and guards escalate into violent confrontations. The ship, now a battleground, cuts off all communication with the outside world, leaving everyone stranded on the treacherous vessel.

Meanwhile, deep in the ship's bowels lies a dark secret long hidden from both the authorities and the criminals. As the prisoners' uprising reaches a fever pitch, a sinister and lethal force awakens in the shadows, adding another layer of peril to an already volatile situation. The surviving crew and prisoners must navigate through the triple threat of hostile seas, merciless foes, and an unforeseen terror lurking within. With alliances constantly shifting and trust in short supply, survival becomes the only objective as those on board face relentless dangers, all while the ship drifts further away from its intended path.