Right after Ryu Sun-jae, a top star, ends his life, Im Sol, his top fan, somehow ends up at a time when they were in high school and tries to protect him. A fantasy romance unfolds where people who missed each other in time finally meet.
| Actor | Role |
|---|---|
 Byeon Woo-seokRyu Sun-jae | Ryu Sun-jae |
 Kim Hye-yoonIm Sol | Im Sol |
 Song Geon-heeKim Tae-sung | Kim Tae-sung |
 Lee Seung-hyubBaek In-hyuk | Baek In-hyuk |
 Jeong Young-jooPark Bok-soon | Park Bok-soon |
 Seong Byeong-sukJung Mal-ja | Jung Mal-ja |
 Song Ji-hoIm Geum | Im Geum |
 Seo Hye-wonLee Hyun-joo | Lee Hyun-joo |
 Kim Won-haeRyu Geun-deok | Ryu Geun-deok |
 Ahn Sang-wooKim Seok-hyun | Kim Seok-hyun |
 Lee Il-junPark Dong-seok | Park Dong-seok |
 Yang HyukJay | Jay |
 Moon Yong-seokHyun-soo | Hyun-soo |
 Park Yoon-heeKim Won-chul | Kim Won-chul |
 Jeon YeongLee Kyung-ja | Lee Kyung-ja |
 Go Tae-jinChoi Jung-hoon | Choi Jung-hoon |
 Heo Hyung-kyuKim Young-soo | Kim Young-soo |
 Kim Hwi-gyuCha I Seul [Tae Seong's friend] | Cha I Seul [Tae Seong's friend] |
 Lee Chan-yangReporter | Reporter |