Simon and the Fantastic Beasts soon ventured into a strange parallel universe, where the magical creatures of Harry Potter's world existed alongside creatures from the Marvel universe. This new universe contained many powerful artifacts and creatures, including the Dark Book, an ancient relic of immense power. Simon quickly learned that this powerful artifact contained a dark magic that could be used to control and manipulate the creatures of both worlds. Emperor Voldemort, an alternate version of Voldemort from Harry Potter's world, had obtained the Dark Book and used it in his quest to dominate both worlds. Simon quickly realized that he and the Fantastic Beasts were the only ones who could stop Emperor Voldemort and his forces. He and the Beasts formed a plan to use the Dark Book to their advantage and defeat Emperor Voldemort. Along the way, they encountered many powerful allies, including Thor, Iron Man, Black Widow, and Spider-Man. Simon and the Fantastic Beasts soon found themselves in a desperate battle against Emperor Voldemort and his forces. The battle raged on for weeks, and it seemed as if they would never be able to prevail. However, with the help of their allies, they were able to defeat Emperor Voldemort and his dark forces.