Kim Young-Ho is a personal trainer for Hollywood stars. Even though he comes from a wealthy family background, he suffered a devastating injury during his childhood days. Now, he overcomes his problems with patience and stubbornness. Kang Joo-Eun is a 33-years-old lawyer who has struggled to support her family. Now, she's overweight and not so attractive. These two had a connection when they were younger. Now as adults, they meet once again. They both go a diet, which leads to them becoming healthier and having a romantic relationship.