Senior Inspector Szeto Chung (Yang Ming) and Inspector Siu Mei-ting (Chen Xiaohua) of the Technology Crime Unit are both mentors and friends at work, and have repeatedly solved various telephone, Internet, and technology fraud cases. While investigating an online romance case, Szeto Chung meets his ex-girlfriend Cheung Wai (Gao Haining), who happens to have a broken relationship with her husband Sum Tsz-ho (Huang Xiangxing), and Szeto Chung and Cheung Wai’s love is rekindled... Mei-ting later mistakenly causes her family to be defrauded of money, and is emotionally devastated. Fortunately, Szeto Chung supports her and helps her get back on her feet. At the same time, the London gold fraud case is making a fuss in the city, and Tsz-ho and Cheung Wai are also involved, and the crisis is lurking everywhere; the fraud is actually controlled by a powerful group, and the mastermind behind it is the gangster who deceived Mei-ting’s family... Szeto Chung and Mei-ting work hand in hand, vowing to bring the fraudster to justice.