Zhou Li, a forensic doctor, accidentally traveled into a revenge novel about a male protagonist who was reborn. She became the vicious female villain Jiang Ruoli who killed the male protagonist Jun Wuye and his mother. Faced with Jun Wuye, who was once righteous and kind, but turned evil after his rebirth just to avenge himself, Zhou Li, relying on her familiarity with the story routine of the novel, guessed that the real murderer was someone else and took him on the road to find the real murderer. At the same time, she influenced and guided Jun Wuye, allowing him to regain the responsibilities and principles of the criminal justice officer and believe in the beauty of the world again. The two followed the clues all the way, cooperated sincerely, and cooperated tacitly. Just as they gradually trusted each other and their feelings warmed up, the truth that surfaced was far beyond their expectations...