Three friends, Wang Taili, Liu Yan, and Wang Luojia, decide to form their own tour guide company in Burma. One of their first clients is Professor Chen, a highly respected medical expert who will be speaking at an upcoming summit. Due to his position, the professor is worried about his safety so the tour guides jokingly agree to be his personal bodyguards. When the threat turns out to be real, however, the guides suddenly realize that they are going up against a professional killer..