Jaden and his friends hear a scary story about the abandoned Obelisx dorms where several students mysteriously vanished. Intrigued they set out to find the abandoned dorm. There they encounter a person who claims to be a shadow duelist, he's wearing the "Millenium Pendant" which looks suspiciously like the Millenium Puzzle. The shadow duelist has captured Alexis, he'll release her if Jaden defeats him in a Shadow duel.
—Jesse Sanchez