Lin Wanqing, the princess of Beishuo Kingdom, disguised herself to investigate the military situation and met Xiao Che, the general protecting the country of Nanzhao Kingdom, in a border town. A first encounter is a warning test of opposing positions, and it is also the beginning of a fateful entanglement. The peaceful conversation while taking shelter in the mountains brought two hearts quietly closer; the sacrifice of one's life to protect each other under the knife of the robber made love sprout in the misunderstanding. But war broke out between the two countries, and the gap in identity pushed them to the opposite side - he was the invader approaching the city, and she was the subjugated princess who vowed to defend the city to the death.
He won the war, but lost his love forever. Xiao Che, who resigned and went into seclusion, guarded two distant tombstones in a border town and spent the rest of his life in endless regret. The family origins revealed in the letters from ancestors, the tender moments in the maid's memories, and the unsolved mysteries in the lieutenant's mind all add more sadness to this tragic story. It was not until many years later that a young man and woman met in a border town, which seemed to be a reincarnation of fate, making love in peaceful times finally possible to make up for the regrets of the past.
