You can thank this idea to the author of Edventures in Kalos on Fanfiction.net.

Everyone has forgiven the edds and are including them in activities. But what happens when Double D's aunt Prof Burnet sends an invitation to Double D to the Alola region, and he can bring as many friends as he likes, he naturally invites his fellow Edds and asks the other kids of the Cul-de-sac, Rolf, Nazz, Kevin, Jimmy and Sarah choose to come as well.

Ed will choose Rowlet, thinking it's a chicken
Double D will partner with a Bulbasaur
Eddy with a Treeko
Rolf with a Froakie
Nazz with Mudkip
Jimmy with Fenniken
Sarah with Popplio
And Kevin with Chespin

At the pokemon school there will be a five chapter arc, based on the trainers you face, as well as the lore there involving the little girl that was kidnapped by Drifloon, and Jimmy almost being Kidnapped as well, but Eddy saving him and defeating it, resulting in the little girl returning as well.

Lillie, Gladion, and other characters still exist in the plot.