Nang Sao 18 Mongkut

Nam, aka Namdokmai in boxing world, is a student of master Don. She never succumbs to destiny but her parents are addicted gamblers. They ask her to disguise as a trans to cheat in boxing match. They also ask Nam to be an imposter of the youngest grandchild of Sujitra family who has been disappeared for 20 years. Grandpa Tawee believes and invites Nam to his mansion though Thana the oldest grandson who manages the property objects