In a world where humans and vampires coexist, a bloodthirsty Jess falls into a human trap and is imprisoned in the basement of a slave camp. The camp guard, Philip, conducts experiments and tortures Jess in an attempt to cure her genetic illness, but for some reason, unlike other vampires, Jess is unable to recover. To stop the experiment and restore Jess, Philip imprisons one of his slaves, John, a former doctor, with Jess. John cannot leave prison until Jesse's condition is restored. In the end, he tries to open Jess' very alert heart, and in the process, John becomes increasingly fascinated by Jess, a mysterious vampire. Jess realizes that Johan likes her and pretends to accept her feelings to use her to escape from the dungeon... Will the two be able to escape this hell together?