doku is a vampire, and the ENHYPEN, an expert group tasked with hunting and killing down every vampire, is chasing her desperately. one evening, in seoul centre, doku was enjoying the night walking among the korean typical candy stalls. sunghoon, the best hunter of the group, managed to recognize her, and as the regulation says, he must chase her and take her to the secret base. sunghoon however, unlike his members of the group, has no intention of hurting her...