Overweight, kind-hearted Sa Geum-ran (Ha Jae-sook) married into a well-to-do family, but her husband Lee Kang-joon (Jung Gyu-woon) has spent the past seven years in the United States for his business, and Sa Geum-ran has lived with her mother-in-law and sisters-in-law who treats her badly.

Devastated, she drove with tears, as it started to pour the road had become slippery and was hard to see, she later on was hit by a car and crashed off a cliff.

To get revenge against those who've wronged and betrayed her, Geum-ran begs Han Tae-hee (Joo Sang-wook), who she thought was the plastic surgeon of an extreme-makeover television show Change, to transform her, and he reluctantly agrees because of his own ulterior motives.

After weight loss and surgery, Geum-ran emerges from the full-body makeover as a stunningly beautiful woman, and she begins calling herself with a new name Sara (Han Ye-seul), albeit retaining her coarse ajumma personality.

What would happen next as they proceed in their plot but soon learned of a scary conspiracy made by Kang-joon and Chae-yeon for trying to cause Geum-ran's death.