When Ash sees Solgaleo and Lunala in a dream, he makes a promise to them. But when he wakes up, he can't remember what it was! Will the strange Pokemon called Nebby jog his memory? When Ash, Pikachu, and the rest of their friends explore an organization dedicated to Pokemon conservation and care, they discover it may not be as innocent as it seems. Now Ash and his friends will have to work together to protect the people and Pokemon they care about....

"Following their adventure in The Golden City of Eyes, Matilde's Quest brings our trio to Valentia Verona [formerly London, England]-one of the most fantastical places on the planet. Matilde is determined to confront the reason she was cast from her home to wander the land in the first place. But as she and Boldon and Spike stop at villages along the way, they begin to realize that rumors of their exploits are more wide spread then they imagined....