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. Geum-ran learns that Kang-joon has returned home without telling her, not only that but has been having a secret affair with the sophisticated broadcast announcer Gyo Chae-yeon (Wang Ji-hye), and to worsen that as soon as Kang-joon tells her of his affair he asked for a divorce. When Geum-ran sees her in-laws welcoming Chae-yeon with open arms, the distraught Geum-ran threatens her husband. 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. Everyone assumed that Geum-ran was dead and attends her funeral, not knowing that she’s still alive watching them, as she stayed and watched not even her husband or his family came. To get revenge against those who’ve wronged and betrayed her, Geum-ran begs Han Tae-hee (Joo Sang-wook), whom 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. With Tae-hee as her life coach, they scheme to ruin Kang-joon and Chae-yeon’s upcoming wedding in three weeks. But as Sara interacts with Kang-joon in their staged run-ins, old feelings resurface, and she decides that instead of destroying him, she wants her husband back. What would happen next as they proceed in their plot but soon learned of a scary conspiracy behind Geum-rans true cause of her death would her feelings changed towards her husband and would love stir between her and Tae-hee?