In the mid Ming Dynasty, the wandering swordsman Li Qingcang and his seriously ill wife Lan Yu'er sought medical treatment everywhere. They passed by a small coastal town and found that the residents in the city had a strange disease. With Li Qingcang's investigation, a Japanese invasion occurredThe conspiracy gradually surfaced, and as Li Qingcang gradually approached the truth, he found out that the mastermind behind the scenes was closely related to the Li family's massacre that year. In the end, he fought for justice and Qingcang fought in decisive battles one after anotherTaking it to the next level, they defeated the mastermind behind the scenes, Iron Faced Man, and embarked on a new journey of seeking medical treatment with their wife Lan Yu'er.