Fah Pieng Din (2001)

Celica is the daughter of a wealthy family. Her father owns a big house and has lots of money. However, they are living in a small house at the country side and they plan to move. Tewada's family wants to go first to prepare the new house for Celica's family, which only includes her dad and herself. When Celica and her father are on their way to the new house, some assigned bad guys try to kill them and Celica's father dies. Before he died, he burned his daughter with a symbol stamp to represent that she is his daughter. Tewada's family thought that both of them died and they pretended that Tewada is Celica's father's son in order for him to get the inheritence. Tewada doesn't know anything because Celica's father has always treated him as a son. On the other hand, the mayor of the town decides to raise Celica, until she is old enough to go back and fight for her rights. He changed her name so that the bad guys won't be able to find her again. Years later, Celica and Tewada are both grown up and they meet again.