Kham is the last of a family line of guards who once watched over the Chakri Dynasty's war elephants. Traditionally, only the most perfect elephants could successfully defend the throne, and very great care was taken in raising them. Kham grows up forming close relations to his elephant, Por Yai and his calf, Kohrn. During Songkran (Thailand) festival, the elephants are stolen with help from Mr. Suthep, a local Member of Parliament and his son who are collaborating with elephant poachers. Kham discovers that they are in the hands of Johnny, a Vietnamese gangster who runs a Thai restaurant named Tom Yum Goong Otob in Sydney, Australia.