After the fall of King Gwanghae, Joseon's greatest swordsman and royal guard Tae-yul is forced into hiding. In the meantime, Joseon is caught between the Qing and Ming dynasties' conflict, and is at the mercy of Qing's envoy and slave trader Kurutai's ridiculous demands. As the general populations suffering deepens, Tae-yul's daughter is taken away as a tribute to Qing and although he wanted to live his remaining days in solace, Tae-yul has no choice but to unsheathe his sword and face the Qing foes in order to bring his daughter back.
