In 1996, little Angel Snow met Kay, the British prince-level vampire named "Metleka Hewitt Kay". Her handsome and helpless appearance made Angel Snow fall deeply in love with him at the first sight and stay by his side at the cost of her blood. She knew that her blood was... What all vampires can't resist, she became the only one beside him as she wished. Before falling asleep, he said that she was his. The ancient and heavy castle door opened, and what would appear inside... Is it a deep infatuation that involves each other, or a deep and tragic sigh...