Shen Heng, the concubine of the prime minister's palace, was forced by her sister-in-law Shen Yunyao to marry the "tyrant" Prince Jing Xiao Yan who was rumored to be murderous and killed seven concubines in one night.
On their wedding night, the tyrant strangled her neck and threatened to kill her. Shen Heng accidentally touched his hand in despair and heard the voice in his heart: "My hand is shaking, don't really strangle it to death..."
What's even weirder is that the cold and bloodthirsty tyrant during the day turned into another person late at night - he got into her bed, hugged her and trembled: "They all want me to die... Don't leave, please..."
From that moment on, Shen Heng was forced into the whirlpool of imperial power. She discovers that the tyrant kills many people during the day, but all he kills are the Queen Mother's followers; she discovers that behind her invulnerable physique, there is an astonishing life experience hidden; she even discovers that this tyrant who scares the world is just a young man who needs to be protected deep down.
But what Shen Heng doesn't know is that the secret of her ability to hear her heart is also being stared at by eyes in the darkness...
When the truth comes to light, when the Queen Mother shows her trump card, and when the enemy's army presses the situation, how will this concubine who relies on "listening to her heart" to save her life transform from a "death-free card" to a real "chess player"?
