Khao Chon Kai is the name of a military training camp for high-school boys in Thailand. Most of the Thai boys who apply to enter spend their senior year in Khao Chon Kai undergoing training and learning military techniques. The film centers on a group of boys who meet at the camp and begin their training together. Many obstacles happen during the hard time training that they have to deal with. Later, the friendship and true friends are the most precious things they've found in Khao Chon Kai.