Mewtwo is Pissed Off in Synthwave

The basic plot of Mewtwo Strikes Back is that the clone of Mew, Mewtwo wants to prove his clones are superior biological Pokemon and that they are better in every way. Also Mewtwo hates humans for creating him. He invites a bunch of trainers including Ash Ketchum to his island where he steals their pokemon, clones them and has them duke it out. Mew intervenes and a big dumb fight beware the originals and clones erupts.