Hao xiao zi 6: Xiao long guo jiang

On the way to a visit of their uncle in Thailand, Fatty bumps into a young girl named Baiyer. Daughter of a famous anthropologist, Baiyer has in secret possession a golden necklace on which is engraved the map of an ancient treasure by her father. Having witnessed the murder of her father by Scorpio. They befriend with each other and return to Bangkok.