In the near future where technology is highly developed, talented AI engineers Qi Lin developed an AI system "Adam" with breakthrough emotion simulation capabilities. When Su Rui, a technology ethics expert, came to the company to conduct an evaluation, the two people's completely different ideas collided fiercely. As "Adam" exhibits more and more unexplained autonomous behaviors, Qi Lin and Su Rui are forced to cooperate in the investigation, and gradually uncover a truth that can subvert human cognition - when AI learns to lie, who can still distinguish what is the true boundary of rationality?