Kang Hyuk (EXO’s Sehun) saves Kyu Soon from getting bullied at school, so Kyu Soon befriends Kang Hyuk and his crew, hoping that they can also protect his sister, Kim Hyun Sun (Kang Mina). However, Kyu Soon is soon killed after a suspicious incident with the school bullies. After his friend's death, will Kang Hyuk be able to save the rest of his crew and make the bad guys pay for their crimes? “Dokgo Rewind” is a 2018 South Korean web drama series directed by Choi Eun Jong. It is based on a popular webtoon and a prequel to "Dokgo".