In the bustling heart of Seoul, where the neon lights flicker like the heartbeat of the city, Haerin's life is about to take a turn into the shadows. Uprooted from the only home she's ever known, she finds herself in Busan, where the sea whispers secrets and the night holds more than just darkness. As Haerin navigates her new life with her mother, the peculiar becomes familiar, and the impossible begins to seem all too real. In a city where ancient myths breathe and walk among the living, Haerin stumbles upon a truth that chills her to the bone: vampires are not just stories told to scare children. Among them is a boy with eyes like the twilight sky, cursed with a thirst that is never quenched. His struggle is silent, his pain hidden behind a facade of normalcy. But when Haerin uncovers his secret, she is drawn into a world where love battles bloodlust, and the line between predator and prey blurs. Now, caught in a web of secrets that spans centuries, Haerin must choose between turning away or embracing the darkness that beckons her. In Busan, when the sun sets, the true face of the city is revealed, and Haerin's journey is just beginning...