In 1636, the Qing dynasty attacks Joseon. King Injo and his retainers, including Choi Myung-gil and Kim Sang-heon, hide in the mountain fortress city of Namhansanseong. They are isolated from the outside. Meanwhile, Choi Myung-gil insists that they enter into negotiations with the Qing dynasty, but Kim Sang-heon proposes that they keep fighting.
