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During an extradition from the Philippines to South Korea, a group of dangerous criminals unite to stage a coordinated escape attempt from their floating prison. As the jailbreak escalates into a bloody, all-out riot, the fugitives and their allies from the outside exact a brutal terror campaign against the special agents onboard the 58,000-ton cargo ship. But the prisoners aren’t the only ones waiting to rise from the darkness - the freighter may be harbouring an even more sinister enemy…