The scene is set sometime in the near future, after some type of apocalypse or war, and Thailand has been taken over by the United States. Just released from prison, aging assassin Bae Buffgun is offered a job – killing Bangkok's police chief. Buffgun forms a team of killers, comprising his old partner, Ghost Rifle and two newcomers, Dog Badbomb, a short-tempered explosives expert and Elvis M-16, who's suffered some of trauma that makes him think he's Elvis Presley. Meanwhile, Thailand's most deadly assassin, Kit Silencer has also been hired to kill the top cop. Confusion ensues, and even though the chief is killed, the crime lord who hired the killers wants them all dead anyway.