After three years of prep, Kim Minsu is ready to start his first day as a guard on the XB-880, a high-security prison in the middle of the ocean. On his first day, the prisoners riot and take over the...more

After three years of prep, Kim Minsu is ready to start his first day as a guard on the XB-880, a high-security prison in the middle of the ocean. On his first day, the prisoners riot and take over the ship. As they massacre the guards, Minsu poses as a criminal to survive.