Su Nuonuo, the only daughter of the Su family, is bestowed in marriage by imperial decree to Lu Zhi, the notorious Commander of the Imperial Guards. Only after their wedding does she discover that Lu Zhi has secretly loved and protected her for eight years. Their chance encounter when they were young inspired him to do everything in his power to keep her safe, and their affection gradually deepens. Remnants of a treacherous faction force Shen Yan to spread rumors and drive a wedge between the couple, intending to eliminate Lu Zhi. Su Nuonuo and Lu Zhi turn the tables and secretly set their own plan in motion. Unable to bear the weight of his conscience, Shen Yan risks his life to deliver a warning, and the couple joins forces to eradicate the treacherous faction. After the turmoil subsides, Su Nuonuo falls seriously ill during the seasonal change. Lu Zhi stays by her bedside all night, confronting the fear of losing the woman he loves. When she finally recovers, the couple opens their hearts to each other and comes to cherish their companionship even more, spending the years ahead together in peace.