A doomsday dance that begins with conspiracy and ends with deep love. When the inner demon Lu Shen, who has lost his power, is forced to bind with the plutocratic heir Ning Wan who is in dire straits, their story begins with difficulty between lies and truth. He relies on her every "heartbeat" to stay alive, and she relies on his every protection to break the situation. From vigilance to symbiosis, from use to deep love, two lonely souls warm each other under the shackles of the contract. However, the family's centuries-old sacrifice curse is always there, and the truth about the fate of reincarnation is approaching step by step. When the mastermind behind the scenes was revealed, Ning Wan learned that she was actually the lover who died for Lu Shen in her previous life, and every time Lu Shen used his power, he was accelerating his demise. This is a huge gamble to live from death - she challenges the thousand-year rules with mortal wisdom, and he exchanges for her eternal dissipation for a glimmer of life. When the devil learns to love, when the orphan chooses to rely on, and the fire in the heart burns out the darkness, can it light up each other's way back to the world?
Intention: The cold contract burns into sincerity, and mutual salvation illuminates each other's abyss.