Sangchu remembers every single detail of the moments he treasures the most; He remembers the time he was taken from the adoption center, the moment he met Tae Joon, and the moment he met Jae Hee. Tae Joon and Jae Hee were Sangchu's favorite people of all time. The moment he treasured most was when he found out they liked each other. He felt as if he was the one who brought them together. 

But after one incident, Sangchu finds that he actually the one that's ripping them apart, and he's dying. Will he live to see them back together, or will he die with guilt heavy in his weak heart?