[1] Baek Joong-won once saved the vampire Ehwa from being burned at the stake by his fellow villagers.

While attempting to escape together, Joong-won fell off a cliff, and Ehwa gave him her blood to save him from dying.

In modern-day Seoul, the 350-year-old Joong-won runs a luxurious wine bar in Gangnam District with Ehwa.

Though she holds a torch for him, Ehwa can only observe and protect her friend from afar, as he has long closed himself to any new emotion.

One day, Joong-won receives a letter from a former lover, a human he had broken up with 20 years ago without telling her the truth about himself.