During the Longqing period of the Zhou Dynasty, Ning Wanqing, the daughter of the Minister of Rites, amazed everyone with her pipa performance at a plum blossom appreciation banquet, and met Xiao Yunjing, the prince of Zhenbei, in the snow. The oath "If they fall in the snow together, they will grow old together in this life" was quietly made in the snow, but little did they know that fate had already laid a cruel foreshadowing.
When Prince Zhou Yusheng's marriage decree arrived on the same day as the report of the battle in the north, Ning Wanqing, wearing her wedding clothes, heard the tragic news that Xiao Yunjing had died in battle, and on the day of her wedding, she was shocked to hear that he had survived and triumphed. The princess and the victorious general in the palace are trapped deeper and deeper in the whirlpool of power and love. The prince's conspiracy to collaborate with the enemy and treason, the secret bloody game in the court, and the slow poison's death countdown push the two of them into a desperate situation.
"If this world cannot tolerate our oath, I will use the country as my retainer and the underworld as my matchmaker." When Xiao Yunjing pointed her sword at the Tai Chi Hall, Ning Wanqing inserted the golden hairpin with the secret letter into her hair. In front of the punishment hall of Feixue on the Double Ninth Festival, she blocked a fatal sword for him, and finally realized her long-cherished wish of "growing old together in the snow" in Merlin. For the next thirty years, the Yixue Pavilion in the Prince Regent's Mansion was covered with snow every year, but no one enjoyed it.