Birth of a Beauty

Han Tae Hee is the heir of a large company. He is suffering from broken heart syndrome due to psychological shock. To get the woman he loves back, he completely changes an unattractive and overweight Sa Geum Ran to beautiful Sa Ra. In the process, Han Tae Hee falls for Sa Ra. Besides this, Sa Geum is married to a man, who discredits her and along with his mistress, they pray on her downfall, ultimately getting her killed, or so they thought.
(Source: AsianWiki)