Lin Yue, a female of 22 years old. Her official identity is an intern newly hired by the Lin Group. She has a timid personality and is often bullied by her colleagues. In reality, she is the mastermind behind the international financial organization "Yin Yang", with the code name "Zero". She possesses top-notch business acumen and combat skills. She pretends her identity to investigate the truth about her mother's past, and is mentally resilient and good at keeping a low profile, waiting for the right moment to act. Gu Beichen, male, 28 years old. President of Gu Group, a calm and decisive business tycoon. Due to his extremely insecure childhood, he is extremely protective of those he trusts. In the early days, he underestimated Lin Yue due to her disguise. Later, after being involved in multiple business crises, he was secretly guided by her and gradually developed doubts and admiration for her, becoming a key partner for a powerful alliance. Su Qing, a female, 23 years old. She is Lin Yue's cousin and the marketing director of the Lin Group. She is vain and selfish, skilled in workplace tactics, and has long colluded with her colleagues to suppress Lin Yue. Due to jealousy over Lin Yue's mother's inheritance rights, she secretly obstructed things. She was the main opponent in the protagonist's early comeback and drove the development of the identity-shift conflict. Gu Beiyuan, male, 30 years old. Cousin of Gu Beichen, deputy director of the Gu Group. Highly ambitious, he will stop at nothing to seize the inheritance rights. He has colluded with external capital to create numerous business traps. He is both a competitor within the family and the main antagonist in the corporate battle, and his conspiracy was eventually exposed by Lin Yue's undercover identity. The submissive wife of the domineering CEO Lin Yue, an intern from the Lin Group, is regarded by her colleagues as a weak and easily manipulated person in the workplace. No one knows that this 22-year-old girl, who always keeps her head down, is actually the mastermind behind the international financial organization "Yinyao" - with the code name "Zero". In order to uncover the truth behind her mother's mysterious death, she secluded herself in the family business and endured the deliberate suppression from her cousin Su Qing every day. It was not until a business crisis occurred that Gu Beichen, the president of the Gu family group, noticed that the unexpected enlightenment given by this "intern" actually turned the tide. Gu Beichen had a lack of security since childhood, but he developed a curiosity about this seemingly weak girl. Meanwhile, Lin Yue also discovered during their confrontation that this cold-faced CEO had a myriad of connections with the case involving her mother from years ago. As Gu Beiyuan's conspiracy gradually came to light, and as Su Qing's jealousy turned into a fatal crisis, Lin Yue finally took off her disguise. The moment the financial tycoon "Zero" appeared, the entire business world was shaken. And Gu Beichen reached out his hand to her: "Let's cooperate. Let's uncover all the truth together." A powerful alliance has been formed. In the bustling city, a game of revenge and protection is quietly unfolding.