Jung hoseok was just a little boy before things started breaking down, he had a whole life ahead of him that he wanted to achieve, but then one day he made a discovery that he was dying of a disease called cystic fibrosis. Then he had met a girl that had the same disease, but they couldn't be next to each other or near each other, they had made wild adventures and maybe romance? They both wonder how this will work between them and how it will go down, will they die? Will they finally be able to love someone?