Jang Tae-Young (Kim Soo-Hyun) is a popular trouble shooter in the criminal world. He is cold and ambitious. He dreams of building a casino hotel one day. A reporter then goes to Jang Tae-Young.
In 1636, the Qing dynasty attacks Joseon. King Injo and his retainers, including Choi Myung-kil and Kim Sang-hun, hide in the mountain fortress city of Namhansanseong. They are isolated from the outside. Meanwhile, Choi Myung-kil insists that they enter into negotiations with the Qing dynasty, but Kim Sang-hun proposes that they keep fighting.