Erevos is a story about two different persons. Giannos Romar was born in 1814 and is Japanese martial arts expert. He has the ability to transform into a crow and has learned vampire skills. He hunts the streets and the sewers at night. The other character is Eric Koplot who has escaped from a psychiatric institution. He rests in a coffin in a basement. He has the ability to transform into a bat and also looks for prey to relinquish his blood thirst.