In order to save the family, Su Wan was forced to marry on his behalf and became the bride of the bedridden and violent prince. On the night of her wedding, she was bound to the "Healing Villain System" and was told that she needed to gain 100% favor from Marquis Gu Xuan in order to renew her life. After three years of careful care, the system's favorability has always been zero. Until she discovered that the ferocious-looking "Master Marquis" who took medicine and wiped his body every day was actually a double carefully disguised as deputy general Lu Chen.
The real Gu Xuan has been imprisoned for a long time. Gu Xuan's brother Gu An is hiding in the dark as the bodyguard "Gu Qi". All the cruel torture is actually hate to cover up love to protect her from the whirlpool of conspiracy. The so-called system is actually a fatal trap controlled by Lu Chen. When Su Wan tore off the disguise and teamed up with Gu An to break the situation, a bigger shady story emerged - when Prince Chaorui colluded with the enemy to poison Zhongliang, a conspiracy to subvert the country had been brewing for three years.
From the cold courtyard of the Hou Mansion to the snowy plains of Mobei, from the misty rain in the south of the Yangtze River to the dangerous areas of the Miao border, Su Wan and Gu An fell in love with each other in the game of life and death, but they had to "forget their love" in exchange for their lives due to the poison of the same heart. When he saved her life with his heart's blood, and when she went into danger alone to steal the list for him, the promise of "watching the mist and rain in the south of the Yangtze River together" became the only glimmer of light that illuminated the darkest moment.
This is a life-and-death puzzle that begins with a misplaced strategy, and it is also a deep love forged in conspiracy and betrayal. When the dust settles and spring deepens in the south of the Yangtze River, they can finally hold hands and smile and ask:
"Look, isn't spring coming?"