Phing is an ordinary and overweight girl. She is introverted but she has a kind heart because her grandfather who raises her always encourages her to help others. On the other hand, Han, his grandfather's student, is always thinking about himself. Phing is lacking in social skills so, Fei has a chance to get closer and marry her for benefit but this is the beginning of her life's disaster. She is facing with a horrible mother-in-law and her husband is cheating on her with her worker. In the end, she knows the truth but these people try to poison and bury her and her grandfather alive. Fortunately, Korn, whom her grandfather helped a long time ago, can save her and her grandfather. After surviving this, Phing has turned into May, a charming lady with a heart full of rage. She acts like a vigilante and does whatever it takes to hurt those who have harmed her.