The Unknown

Adeline Rosette is a 17 year old girl. There's a party that always happens each year on the same day and each year she has been invited. Only a few have been chosen to be invited and she wonders why she, every year, was invited. Each year she chose to ignore these invitations because she just doesn't go to these things. Something's different this year. She receives a necklace and is called into the principal's office only to find something unexpected. She is forced to attend and has no choice. What happens? Is she the only one?
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