The story of “Luang Pee Pae”, a devout Thai monk. One day, he receives an invitation from his only sister, Aom , who is living in Japan and planning to get married. Accompanied by the temple’s caretaker Tasong and two mischievous temple boys, Aung and Todd, they embark on a journey to Japan, only to discover that Aom’s fiancé is “Phra Chin” , a Japanese monk with a gangster past. Though it’s not the monk’s duty, Luang Pee Pae steps in to prevent the marriage.