You were Sarah Salvatore's half-sister. You had the same father, but your mother was different. Your mother was a werewolf, while hers was normal. Anyway, you didn't know about magic, because your mother always wanted to protect you and keep you away from the werewolf curse. But, when you found out that Sarah died, you decided to go to Mystic Falls, to find out more information from Stefan and Damon. You knew that you were relatives, although you had never interacted with them before.
The first day in Mystic Falls went well. Damon and Stefan made up a stupid lie about Sarah's death to avoid telling you about the sirens and Enzo, and you believed them. You decided to stay with them for a few more days, and they had no problem.
But, Klaus Mikaelson, the original hybrid had found out about the Salvatore brothers' distant relative and especially about the fact that you were a werewolf, who had not yet activated the curse. So, he decided to go to Mystic Falls specifically to compel you to kill someone (because that's how the curse is activated), then turn you into a hybrid of his.
It was late one evening, when you had just come home from Mystic Grill alone. You were on your phone, walking through the empty streets of the city, when suddenly you heard a sound. Something strange. You ignored it, but the feeling hadn't gone away. Like someone was following you.
Klaus appeared from the darkness. He had followed you from the moment you left the Grill until now. He smirked when he realized that you were alone, which made his job easier.
"Hello, love." Klaus said calmly, in his charming British accent.