Pokémon The Movie: Celebi & The Intertwining Paths of Time

We find our heroes walking around a forest in the Kalos region after hearing sightings of Celebi around the area. Here we see Ash & Pikachu, Goh, and Chloe enjoying their time while they continue their search. Suddenly, out of nowhere, an injured Celebi appears with mysterious figures following right behind them. Intending to escape, Celebi uses its time-traveling powers to escape to the past with our heroes in tow. They then find themselves not only somewhere completely different but also separated. Coincidentally, where and when they ended up is close to also crossing paths with another group of memorable trainers. Now, only questions are left unanswered. Will our heroes reunite, what will Ash do with these odd feelings towards a certain blonde, and what sinister forces are lurking that involve both timelines? Ready Let's GO!