This web-drama is about a boy group who fall to the past just a day before their debut and getting back in time with the help of a girl.
Kim Sae-ron
Jung Ah-rin
Cha Eun-woo
Cha Eun Woo
Moon Bin
Kim Myung-jun
MJ
Park Jin-woo
Jin Jin
Park Min-hyuk
Rocky
Yoon San-ha
Yoon San Ha
Seo Kang-joon
Ah-rin's elder brother
