I don't want to recap this movie. Not because it's bad (actually, I think it kind of is, but
100 Years After was worse), but because talking about this movie will basically reveal how little of the
Kamen Rider franchise I actually know. As an Asian child to immigrant parents, I didn't exactly have assloads of spare time as a kid, and most of the things I follow currently I started in late high school, which is a BAD time to start becoming a fan of anything. It's kinda deflating to see people having discussions about which Rider suits looked the coolest, bitching about
Kamen Rider Decade or the Chou Den-O movies, or debating whether the Showa or Heisei Riders were more badass, while I have to frantically try to catch up in addition to school work. Fortunately, from what I've seen, the fandom seems friendly enough, though I suspect that's partly because the Toku fandom in general is nowhere near big enough to have a huge supply of bigoted vocal minorities.
Anyway, now that I've gotten confession time out of the way, this is
Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai, a movie in which the titular showdown is shoehorned into the last three minutes, and barely features that other franchise that a couple of people may have heard of. After years yelling at each other about how the Showa Riders did actual stunt work with no CGI, or how the Heisei Rider attacks look way cooler, finally the fans get a movie which answers all of their questions about who would win in a fight.
Actually, no it fucking doesn't! What it does do is meander around, trying to tie up loose ends from previous series, and piss all over the legacy of the Showa Riders, without which the Heisei Riders would never have even existed! And I haven't even watched most of the Showa era! Or the Hesei era! How do you try to make a movie to pay tribute to a long-running massively popular franchise, and piss off a relative newcomer like me? That's a pretty big crime for any anniversary movie.