'Jo Eun-jo,' a freshman at a university, lives in the same building as his favorite entertainer, Ji Eun-pa while having the honor to become a direct junior to him at the same university. Every day she loves to see him. One day, Eun-jo opens the door to the strange sound from downstairs. And Eun-pa bites the back of her neck...?! Meanwhile, Eun-pa realizes that Eun-jo's blood is something more special than 'Hae-in,' his fiancé and 'vampire bride' who will quench his thirst for blood.