Duan Cheng (段成), an undercover police officer played by Fu Dalong, escapes from prison transport and publicly declares himself as "the only person who knows the Bee formula" .

In Jiangzhou city a new synthetic drug called "蜜蜂" (Bee) is devastating the drug market and causing multiple deaths among teenagers . After the drug's creator, is arrested and executed, the formula faces extinction—creating panic in the underworld .