On a Christmas Eve, a lifeless body of teenage boy is found. The victim's revenge-driven twin brother checks himself into a juvie to hunt down the suspects.
Jinyoung
Joo Il-woo / Joo Wol-woo
Kim Young-min
Cho Soon-wu
Kim Dong-hwi
Son Hwan
Song Geon-hee
Moon Ja-hoon
Heo Dong-won
Han Hee-sang
Hwang In-sung
Go Bang-cheon
Seo Jin-won
Choi Noo-ri
Kim Jeong-jin
Baek Young-jun
