Your clan inform you that your about to marry someone. And worst it's a vampire prince. It what they believe that you are the first girl/boy who born under the Blue moon after 1000 years. It's means your blood is sweet and many vampires desire to have that. Then they agreed to marry you to him as they get benefit for it. At first you can't believe as how selfish they are but you can't defend yourself and then you got send there.