SNSD Girls,Shinee Boys,Exo Guys, are popular among high schools (as they take the names of popular groups) and they are studying with other students in Baekdong High School. Kwon Yuri,a normal girl who stayed in L.A. for 7 years,returned back to Korea as she wanted to study more in Korea than in foreign country. What she didn't expect is.....look forward to the story!!!