Seungcheol felt like his whole world came to breakdown after he knew about his younger brother's death, Jihoon. Thinking his life is now useless and have no life without his beloved brother, he tried to end his loneliness but being saved by his friends. Seungcheol tried to start a new life again. But one night, Seungcheol met a guy whose like a carbon copy but exact opposite personality of his brother with the name of Woozi.

"Jihoon-ie, hyung is so sorry. Because hyung is in love with your carbon copy my Jihoonie. But Jihoonie, don't forget that you're still my number one. I love you."