Bao Seed engages in drug trafficking in Thailand. Unaware of Ah Deng's whereabouts, he is shocked to learn that she has died and promises to avenge her.

Bao Seed continues with his undercover work under his new superior Madam G. After serving time, Cheuk Hoi is released from prison and opens up a coffee shop, yet trouble continues to follow him in spite of his efforts. Ngai Tak Lai is a cop tracking on Bao Seed's tail. In truth, he is buoyed by an ulterior motive.