"What do you want from me?" "Help me find out who did this to me, or I'll kill you." Kim Taehyung, aspiring musician and photographer, has just moved into his studio apartment in Seoul, South Korea when it happens. One night, he is attacked by a violent poltergeist who is lated identified to be Min Yoongi, a rapper and drug dealer murdered by an unknown killer. After being given an offer he couldn't refuse, Taehyung is thrown into the circus that is the Underworld of Korea filled with drugs and violence with a benevolent spirit as its ringleader.