Ace detective Lin Zhuo is reborn as a rookie in the police force. She returns bearing the blood debt and regrets of her previous life, vowing to uncover the inner circle in the police force and solve unsolved cases. The primary goal is to protect the talented student Shen Qihua who fell into darkness in front of her in her previous life. She thought this was a one-way protection and redemption, but she didn't know that the seemingly gentle and distant young man had a deeper obsession than hers hidden in his eyes. When the two worked together to approach the truth, she discovered that he was not only the witness she wanted to save, but also the top hunter who had already laid out the chess game for her. This time, will we go into the abyss together, or will we save each other?
