Seo In-guk

On the edge of a corrupt city lies the "Texas Hot Spring," run by brothers Ro-han and Gyo-han. Ro-han meets Jae-in, a girl abused by her mother, and ends up selling her drugs, causing her death. Meanwhile, Gyo-han, allied with the local crime boss, decides to sell Jae-in, blaming her for his brother's change in behavior. Ro-han refuses and escapes with her, determined to protect her.

While under heavily armed guard, the dangerous convicts aboard a cargo ship unite in a coordinated escape attempt that soon escalates into a bloody, all-out riot. But as the fugitives continue their brutal campaign of terror, they soon discover that not even the most vicious among them is safe from the horror they unknowingly unleashed from the darkness below deck.