Park Chanyeol has an unknown disease at the age of 3.

Nobody knew what it was and his dad became restless.

And so, a childhood friend of Chanyeol, Jongin, has an uncle who is half a doctor and half a scientist. 

So, Mr. Park went to him to find out what the disease that Chanyeol have.

But then... 20 years have passed.

Chanyeol undergone so many symptoms.

Either hurtful or not, he've gone through them.

And it breaks his dad's and Jongin's heart that their loved one has to suffer like this.

And so does Chanyeol. 

His dream of getting better is getting vaguer and vaguer as every day comes.

Will he actually get better?