Seonwoo attended the opening meeting of the semester at his university. He stepped out to shake off his hangover, but while getting some fresh air, he drank something offered by Choi Lee Hyun — the person everyone was talking about — and immediately lost consciousness. When he woke up, he found himself confined in Lee Hyun’s house and forced to stay there. Life inside felt strangely warm and comfortable — almost unreal for a captivity — until fragments of Seonwoo’s childhood memories started to return… “Hyung, you finally remember what you did to me, right?”This is the emperor’s captivity Seonwoo endures to save Lee Hyun, who is still trapped in his trauma.