In a world where fame is everything, Bang Hari is no different from the rest who are willing to do whatever it takes to make it big. However, her quest for stardom takes a turn when a physician advises her to shed 20 kilograms to avoid serious health risks. In spite of this setback, Hari is resolute to record her mukbang videos, and thus, she commits to daily post-school workouts. Meanwhile, On Doyun, her classmate, struggles to resist the urge to drink blood as a half-vampire dealing with his own demons. Things get complicated when Doyun becomes enthralled by the scent of Hari's blood, and she seems to be offering it to him repeatedly. Eventually, they agree to weekly blood-sucking sessions, but Doyun cannot fathom why Hari's blood is so irresistible to him and why she is willing to go to such great lengths for fame. As he investigates further, he discovers that he is not the only vampire enticed by Hari's blood and heart.
