In 1999, a teen with a heart of gold begins keeping close tabs on a popular classmate as a favor to her smitten best friend.
Kim Yoo-jeong , Han Hyo-joo , Woo-Seok Byeon , Harrison Xu , Yuuki Luna , Seong-wu Ong , Park Jung-woo , Yoon Seo-Ah , Myoung Gong