Woo Seung prevents Hyun Jae from leaving her behind by making him spend the night in her apartment. The following day, Hyun Jae confronts Yeong Jae to confess about his disappearance and later uncovers the truth about it from someone else. After finding a way to return to the past, he becomes conflicted as staying with Woo Seung in the present would prevent Ji Hoon from being born. Meanwhile, MJ wants to reveal the truth about his songs to the public before Yeong Jae does.