Yifan get bullying in his young age because he is fat. He got bullying every day in school and often changes school too because of his father occupation. When he transfers to another new school, he meets with his first and only SAVIOR. However, he and his savior haven't communicated with each other at the beginning. Only after a serious bullying take place, then Yifan finally get to talk with his savior. Yifan's life started to bloom and he get excited to come to school unlike in the past because he can meet and talk with his savior. His savior is really kind and Yifan think he start to like him.

But the happiness is not that long. One day his father announces they will move again. This time, they need to move to China. Yifan is not happy. It's weird because he always happy whenever his father announce the same thing in past. Yifan have to bid his savior goodbye on the next day school. His savior also bid his goodbye with a smile. They wave to each other till Yifan's car cannot be seen anymore. However Yifan never knew that his savior broke to tears the whole day...

After 10 years, Yifan return to Korea. For two reasons, further his studies and to find this one person, his savior. Well, of course he is not fat anymore, he grows as a handsome tall man and he bet even his savior will not recognize him. He actually get through a serious diet when he move to China. And he did it because of his savior. He manages to get to the university where he believes his savior roll to. And yup, he manages to meet his savior again but he doesn’t recognize Yifan at all. Even so, Yifan and his savior become a friend in no time because his savior is still the same like in the past, kind and never judge people.

So, the conflict begin here where Yifan get to know his savior already have a boyfriend. Yifan is so heart broken. He never thought this will happen. He almost wants to give up because whoever get his savior must be much better than him. But, after meeting the boyfriend, Yifan get fired up and confused because his savior's boyfriend is.......FAT.