Aunt Bing fell into a "pump and dump" scam once again, losing all her money and suffering an emotional breakdown. The investigators noticed suspicious activities involving Digi Securities, with the key figures being the head of the securities firm, Lo Kam, and the influential stock market player, Ma Chi Wa. There were unusual transactions between the two, but Ma Chi Wa claimed that his subordinates were responsible for them, asserting his innocence and displaying arrogance. Tony boosted the morale of his discouraged team members and decided to focus on exposing the major flaws of Lo Kam. They relentlessly questioned Lo about his various transactions, using both persuasive and coercive tactics. They first warned him that he must respond to questions based on SFO183 of the Securities and Futures Ordinance. Then, they mentioned the principles of confidentiality agreements and the fact that admission of guilt cannot be used for prosecution under SFO187. After some ups and downs, they finally convinced him to cooperate.

Feeling the pressure, Ma hastily destroyed all the evidence and planned to escape by helicopter. This prompted a joint operation by the Hong Kong Securities and Futures Commission and the police, leading to a chase and confrontation. Eventually, they apprehended him. Afterward, Tony and Crystal's relationship improved, and their working dynamics were subtly influenced by each other. As members of the Securities and Regulatory Commission, they continued their mission to uphold fairness in the stock market and worked together towards that goal.

Aunt Bing complained to Hong Kong Securities and Futures Commission, crying and accusing them of mishandling her case, which resulted in the loss of all her assets. Crystal patiently comforted her, but Tony showed little sympathy and tried to dismiss her. The retail company "Good Day" went public with its acquisition of its competitor, "Nikkou House," causing a significant increase in the latter's stock price. However, the investigation team discovered unusual large-scale transactions that occurred before the news was announced. They found Fong Kai Ming for questioning. Fang seemed innocent, but Crystal discovered someone named Hong Tsz Lok in his daily activities, who had financial dealings with him. It turns out that Hong Tsz Lok, a senior business manager at Good Day, borrowed money from Fong Kai Ming and took advantage of the insider information to make a quick profit. Tony sympathized with Hong's situation and felt sorry for him, which puzzled Crystal. She couldn't understand why Tony had such different attitudes towards Aunt Bing as a victim but Hong as a wrongdoer, leading to an argument between them. However, Crystal had no idea that Aunt Bing's reason for complaining to Hong Kong Securities and Futures Commission and wanting to recover her money since she had fallen for another online investment scam and even resorted to borrowing from loan sharks, hoping to make up for her previous losses all at once!