- Khamlao is a secret agent for the country of Wongnaileum, which shares the common Isan dialect and culture with its neighboring country, Thailand (similar to Laos). He is dispatched to Bangkok on a secret mission to track down some terrorists. To do so, he goes undercover as a luk thung singer working for a record label that serves as a front company for dealers in weapons of mass destruction. As he probes deep inside the record company, he finds that the company's executive secretary is actually a CIA agent, assigned to the same mission. Meanwhile, Khamlao's wife, Keaw, discovers that Khamlao had lied to her about his job in Thailand.
The end of the film leaves where the first film starts.