A boy named Sehun was transfered from Cheongdam Dong to Seoul because he'd to follow his mother who's working at Seoul.

He was transfered to Yongsan International High School. At the school, he met Luhan, a boy with precious look. 

Sehun was still kept on being cold, just like how he behave at his last school who's not always smile and ignoring people. 

But will Luhan, who's always being nice to everyone, change Sehun to become a better person at last ?