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 scams. While investigating an online romance case, Szeto Chung meets his ex-girlfriend Cheung Hui (Gao Haining), who happens to have a broken relationship with her husband Sum Tsz-ho (Huang Xiangxing), and Szeto Chung and Cheung Hui are able to rekindle their love. Mei-ting later mistakenly causes her family to be defrauded of money, and her emotions are greatly hit. Fortunately, Szeto Chung supports her and she stands up again. At the same time, the London gold scam is making a fuss in the city, and Tsz-ho and Cheung Hui are also implicated in it, and the crisis is lurking everywhere. The scam is actually controlled by a powerful group, and the mastermind behind it is the gangster Szeto Chung who deceived Mei-ting's family. Mei-ting joins hands and vows to bring the scammers to justice.