Luis Carpio, a 30-something virgin who, dejected after his girlfriend turns down his marriage proposal, heads off on holiday to Thailand with a bunch of friends. Once there, a peculiar chain of events ensues when Luis is mistaken for a famous Thai porn star, the "Big Bird" of the title.
Tom and Ric are cousins who search for the Yamashita treasures when a map was given to them by Tom's professor. The map was also being chased by a group of Japanese who are also interested with the treasures. With Tom's and Ric's effort and with the professor helped, they were able to find the treasure even though they've faced challenges and difficult situations.