percy jackson and crew are once again 'borowed' by a powerful entity but this time they meet so others who are also brought to this strange place with no warning but a black vaper. izuku and class 1-A are in class when a black fog fills the classroom only to wake up withseveral teachers and a bunch of strangers in a gym like room. harry potter was in the middle of a double potions lesson with the slitherin student when a black cloud filled the room. snapes shout of "which incopitent fool is doing this?" was cut off as.... we all woke up in a large room? and strangers!