Chief actuary Du Fei wakes up one night and discovers that he may be the murderer. He uses symbiotic artificial intelligence and combines his professional skills to uncover the truth, clear himself of suspicion, and justice is served. In the process of seeking the truth, he passed through many difficulties and twists and turns, but trust, love and friendship allowed Du Fei to never forget his original intention and stick to his bottom line, so that the interest groups who ultimately attempted to make illegal profits received justice. Not only did Du Fei get rid of suspicion and gain love, but the artificial intelligence that accompanied Du Fei along the way also successfully transformed and evolved into a real life and found a way to live in harmony with humans.
