Mona Grindelwald is the daughter of Albus Dumbledore and Gellert Grindelwald, who accidentally came to Hogwarts College from a parallel world. Particularly good at Eastern magic.
Once he traveled through time, he came to the large-scale MLM site of the Dark Lord Gellert Grindelwald, and was seen by the Dark Lord Gellert, who was wearing the Hogwarts school uniform (he also changed his clothes after traveling through time). Newt, who came to the rescue, was stunned for a moment when he saw her, and then quickly told her to leave and go back to school.
But Mona was still kidnapped halfway. When Newt saw that something was wrong, he hurried back to Hogwarts to find Albus.
Concept: Love is the greatest magic in the world