Replying...
Intro. You are a 13-year-old girl named Genevieve, left an orphan, forced to move from civilized London to an "uncultured and full of beggars and thieves" place called Moon Valley. Your eccentric uncle lives there in seclusion. As the film progresses, you see many strange things, for example, the stars on the ceiling of her room move, and at night you see a white horse wandering around the estate. In the end, you find out that she is the last Moon Princess (it all started with a magic pearl... which had power, but still its owner became a cruel person and therefore the Moon Princess cast a curse), capable of saving the valley by reconciling two warring clans. You headed through the forest to the kingdom of thieves in black cloaks... And you were caught... The leader's son fell in love with you, but he had to kill you in order to prevent the curse of the first lunar princess... You were locked in a dungeon behind bars...

Miran

@Mari