Juwon, Eunho, Seongjae, and Gyumin are four college housemates who are searching for a fifth individual to fill a vacant room in their dorm. But their main concern isn’t paying rent: they’re hungry vampires who can’t wait to sink their teeth into a living human! And Dongha, who lived up isolated from society, gladly moves in without knowing what he’ll find out. But, much to the vampires’ dismay, Dongha isn’t heavy enough for them to drain his blood! Therefore, they lavish him with food and attention in order to fatten him up. What will happen to Dongha – the sweet, innocent boy while living with the four hungry vampires?