Shen Qingci, a top medical student, transformed into a concubine who was given poisonous wine. She used modern medical skills and poison techniques to temporarily suppress the poison. Faced with the conspiracy between her eldest sister Shen Mingyue and the third prince Xiao Jingyuan, she calmly fought back and won Xiao Jinyuan's attention with her intelligence. In order to avenge blood and survive, she and Xiao Jingyuan used each other to gradually develop feelings for each other. They joined forces to stir up the turmoil in the court and harem, and found a way out in power and love.