In the bustling city, negotiation expert Shu Yu is famous in the police circles for his 100% surrender rate, but no one knows that his success stems from his contract with the inner demon "Confusion". The trick of deception can penetrate the deepest part of people's hearts, but it comes at the cost of memory and emotion.
When "possessed" appear one after another and black fog envelopes the city, Shu Yu and Luo Xin step into the maze of people's hearts side by side. From bank robberies to celestial conspiracies, from spiritual cages to cross-border negotiations, they test each other's bottom line in crisis after crisis.
Chased by the heavens, hunted by the heart, and the Nightmare Lord descended, Shu Yu gradually discovered that the confused heart was not a maggot attached to the bone, but the other half of his soul. Between love and sacrifice, redemption and betrayal, they finally chose to merge and become the "law of the heart" to protect the fragile peace between humans and inner demons.
This is a negotiation that spans spirituality and reality, and is also a legend about human nature, trust and eternal contract.
