The concubine {Su Yunshu} was forced into the palace, and her love for the gloomy emperor {Xiao Jin} was hidden under the disguise of being heartless. She thought she could avoid the palace fight by pretending to be crazy, but she didn't know that Xiao Jin's approach was meant to be used. The Green Tea Princess sows discord, the Blackened Princess sees her as a thorn in her side, and the vicious stepmother is plotting to harm her family outside the palace. When her love was exposed, Xiao Jin's suspicion and use pushed her into the abyss. Only then did she realize that within the palace walls, sincerity is a sharp knife. She was cruel to the extreme, but he protected her behind him with red eyes - this sadistic love inside the palace wall that started with exploitation, was the emperor's heart unpredictable, or was she too stupid in love?