It’s funny how no one wants to be in confinement, no one wants to be restricted, no one wants to be in prison and yet when they live in that prison for a long time, it becomes their home, even if they want to escape from that home, it never leaves them, not out of love but in the shape of monsters that constantly haunts the prisoners by showing memories of that prison. This prison fort is the perfect example of that place where in every corner hollow memories, groaning pain, blood, and death lurk. This prison fort is a huge building outside the city of Busan with its own rules and justice, where international criminals are waiting for their deaths every moment. Outside the prison fort, two guards are always on the watch.