LEGO Harry Potter Advent Calendar Day 13

UPDATE: This is the Room of Requirement LEGO Harry Potter Advent Calendar Day 13 and it's something I'm really confused about because it can belong to any part of the Harry Potter and the Order of Phoenix book/movie. Though the small grey minifig pieces do come from the old LEGO games that you can build which you can check here https://brickset.com/sets/theme-Games there is also a Harry Potter game on page 2, also the small grey minifig pieces were used as statues, and such in some games.