Chanyeol, a popular kid from his high school, is carefree but serious when it comes to relationships. Baekhyun, popular for his extremely good looks and personality, dates anyone who asks him out, but only for a week. Chanyeol asks Baekhyun out. 

When the one-year-younger Chanyeol confesses to Baekhyun, the latter took it as a joke until his first kiss was stolen.