She was a druggist, and she saved the wounded man in a moment of soft-heartedness, but in exchange, her whole family was wiped out. After a lucky escape, she changed her name and returned as "Fang Mulan", but became his nominal "sister-in-law". In the wind and rain of Shanghai, he is Murong Qingyi, the most unpopular second young master of the Murong family. He is vicious and cruel, and he keeps pace with every step. She is a chess piece manipulated by her family, hiding in hiding, just to kill her enemies with her own hands. He thought she was a spy sent by his brother and was testing him everywhere; she thought he was the real murderer of the family and hated her to the core. But when the blood-stained hosta reappeared in front of her, and when he frantically called her "Susu" in the fire, she was shocked to realize that it would take her whole life to repay her heartbeat for that second. Love is a raging fire that burns away everything, leaving only ashes. If this second is destined to go too far, do you still dare to reach out?