The girl who was turned into a vampire by a mysterious entity has come back to her human form. She has no recollection of the past two years, but she is still a vampire. She has no memory of her life as a human, nor does she remember anything about the world of the vampires. All she knows is that she is a vampire, and she needs to find a way to return to her human form.

The main character is named Amber. She is a beautiful, vivacious, and charming girl. She has a blue-black mood. Her loved ones are afraid of her.

The girl wants to find out who is the culprit and bring the culprit to justice. She has no idea who the culprit is, nor does she know what the game is about. All she knows is that she is going to find the culprit and solve the puzzle.