After guiding his team through the resolution of a significant financial scam, the head of the Anti-Fraud Unit, Zeng Miao Zhu, stumbles upon a far-reaching conspiracy operating behind the scenes. Recognizing the threat, he dispatches top agents—Lam, Arrow, Big Mouth, and Ba Jie—to penetrate the high-stakes gambling operation run by the cunning Tang Gang. Their objective is to embed themselves as representatives of the venture, swiftly gaining trust and drawing in more participants to dismantle the criminal network from within.