The Grandchildren Generation transmigrates into a parallel timeline of the Next Generation. The main couples will follow the original pairings. OOC warning, with lots of headcanon; see the pre-story notes for details. If that bothers you, feel free to leave.
[Overpowered characters + as many happy endings for everyone as possible + Grandchildren Generation transmigrates into the Next Generation]
Albus Potter and Lily Potter were supposed to appear at Platform Nine and Three-Quarters. Instead, one tumbles out of a dusty fireplace, while the other appears on a hillside. After a series of mishaps, they discover they have transmigrated. At first, they think they have merely traveled through time, only to realize they have landed in an entirely different world.
In their search for Albus and Lily, James and Scorpius suffer plenty of hardships too. One falls into the sea, while the other does arrive at his family estate, only to nearly be thrown out by his own grandfather.
Who is behind all this? Things are both the same as in the original world and different. Come see what kind of wonderful chaos the Grandchildren Generation can stir up.
The Grandchildren Generation will get more page time, and Draco will make frequent appearances. Harry's trio may feature less. There will only be canon couples, and the four little ones of the Grandchildren Generation won't have any pairings.