The unrestrained swordsman Huo Zhanbai seeks medicine for a friend's child and encounters the pharmacist Xue Ziye. Over eight years of daily interaction, they progress from having their own convictions to deepening understanding, mutual redemption, and a promise to meet under a plum tree the following year. However, due to the responsibilities they bear, they find it difficult to express their love, leaving behind a regret of eternal separation. Amidst the joyous toasts in the snowy night and a farewell across a thousand miles, a poignant and unforgettable missed opportunity unfolds—a love destined to be unable to endure, depicting a tale of redemption and letting go in a life-and-death romance.

是非善恶，辨明真相风雨同舟。
一眼万年，念与所爱执手相伴。

In the late Song Dynasty, the Yang and Guo families made a pledge that their future children will become sworn siblings or marry if of different genders. However, before they could fulfill their pact, both families were tragically killed by the invading Jin army. Orphaned by the war, Guo Jing (Ci Sha) and Yang Kang (Wang Hong Yi) were raised by different martial arts masters with the goal of avenging their families' deaths. While Guo Jing follows the path of honor, Yang Kang betrays his family by siding with the Jin army. Accompanied by the adventurous Huang Rong (Bao Shang En), Guo Jing eventually encounters Yang Kang, but their once-promised brotherhood has turned into hate. Based on the novel “The Legend of the Condor Heroes” by Jin Yong.