Kim Minseok, better known as Xiumin, works as a Barista at a rather popular Cafe in Gangnam.  There, he becomes friends with a daily customer, Kim Jongdae, better known as Chen. In the same Cafe, Luhan works alongside Xiumin and the two are best friends. 

Taehyung feeds off of nightmares and Jungkook is the only human to satisfy his hunger.