Ngao Kammathep (2010)

Tien has been raised as a boy all her life because Kamontat, her ill-willed father, swapped her with the family's gardener/caretaker's son in his estate in Hua hin, leaving behind a ring strung in a necklace as key to her true identity. Before Grandpa Thaksasoot died, he declared that he wanted a boy to carry the family name since Thorn, her father's brother, who also later died, can't have children. Years later, Kamontat searched for Tien because he doesn't want his adopted son to inherit the…