Possessed by an Ancient Ghost

A teenager comes across a strange piece of jewelery one day. As time goes by, she begins to notice strange things happening. Suddenly, one day, her body is no longer just hers, it's also the host to an ancient egyptian ghost, who wants revenge against someone she's never heard of before, Yugi Motou. She goes off to the Duelist Kingdom Tournament in hope of warning Yugi before it's too late.