The Ash Tai Power Hour

The Ash Tai Power Hour is a television crossover film trilogy set between the universes in Pokémon and Digimon. The special is a parody of Nickelodeon's Jimmy/Timmy Power Hour. The film series consists of the following: a first film of the same name as this series, a second titled The Ash Tai Power Hour II: When Rivals Collide! and a third, The Ash Tai Power Hour III: The Jerkinators! It premiered on Cartoon Network and Nickelodeon in June 2018, and after that it was released on DVD and Blu-ray in June 2019.

The Ash Tai Power Hour (2018)
For a full summary, see Ash Tai Power Hour

Struggling with his science project, Tai ("Digimon Adventure") hopes that he could be sent to the best laboratory in any universe. When Sora, one of the Digi-Destined, offer him this idea, Tai is sent to Kalos, the universe of the Pokémon Trainer, Ash Ketchum ("Pokémon") who's sent to the Digital World, Tai's universe, when he activates a device designed by Sora. As they attempt to return to their respective settings, the characters make friends with the various side characters that are not of their own universe, and Tai becomes attracted to Ash's friend, Serena. Now Tai has to rescue the kidnapped Pokémon Trainers and their Pokémon from Team Rocket. Meanwhile, Ash must stop Yuiko from taking over the Digital World.

The Ash Tai Power Hour II: When Rivals Collide! (2018)
For a full summary, see Ash Tai Power Hour 2: When Rivals Collide!

Ash and Tai enter each other's worlds for a second time, both wanting to ask Serena out to their respective dance club celebrating the birthdays of Pikachu and Agumon. In an attempt to gain Serena's affections, the two engage in a battle of smarts that sends Tai and his friends to the Digital World. As Ash seeks to prove that Tai is a fraudulent Pokémon Trainer, Meowth (of Ash's universe) unleashes chaos that threaten their Earth, and Greymon of Tai's universe gets angered by Tai's friends and their manipulation of his dislikes.

The Ash Tai Power Hour III: The Jerkinators (2018)
For a full summary, see Ash Tai Power Hour 3: The Jerkinators

In their third and final encounter, Ash and Tai make amends while trying to defeat the enemies from their own universes—including a evil Digimon that they encountered-accidentally rejecting their respective friends in the process, including Serena. Initially, they are unable to defeat Devimon, he absorbs the energy, and begins destroying both children's universes.