In an effort to support her family, Kang Joo Eun has become a workaholic lawyer without any regard for her personal well being. Overweight, unattractive and depressed at the prime of her life, Joo Eun comes across Kim Young Ho, a renowned personal trainer who considers health a deeply personal calling. Can Young Ho and his stubborn perfectionism whip Joo Eun's body-and heart-back into shape?