If you love Airbud, the lovable K9 that becomes a soccer super star, you'll love Superman and Superdog. Though the CGI doesn't quite leave the cartoon category, Superdog makes up for this small shortcoming with extra enthusiasm.
In this reboot, Superman and Supergirl are sent to Earth to spread their seeds to as many Earth Men and Women as possible. Krypton was destroyed, but their genetics will live on through hybridization. Resources were scarce, but luckily there was enough space left for Superdog. Thank god for that because without him, the movie would have been way too serious.
And If it bothers you that Supergirl is much younger than Superman, don't worry, they explain that. While Superman was told to make a large harem of women to breed with, the filmmakers left Supergirl's mission more vague.
Lex Luthor hacks Superman's computer, then releases the message his parents sent him. The one about making a harem of Earth women and spreading his seed as much as possible. The message is then immediately broadcast to every news outlet worldwide. Of course there were no issues verifying the authenticity of a message spoken in a dead language and in alien crystal based data format.
The monster that Superman helped saved the Earth from moments ago is then declared old news and follows is a montage of men complaining they no longer are Superman fans saying things like "The Man of Steel ain't gettin my woman!". The similar montage of women complaining about Supergirl's lifestyle choices and her chances of taking their me. did not make the final cut of the film. You can only fit so much into 2 hours.
Anyway Superman becomes extremely unpopular in mere seconds. This applies to both his close friends AND with peoples' whose life he had JUST saved. This part was the most unrealistic part for me. We have a President on tape bragging about sexually assaulting women and getting away with it. My fan status would have remained intact even if the allegations were true. I could see how the average person in that movie world might feel, but as long as I didn't have a girlfriend who worked at the daily planet, I couldn't care less about Superman flying around spreading his seed. And as a movie watcher, I would have supported thr director if he decided to go in an unusual direction, like The Shape of Water by Gullermo Del Toro. A non traditional romance of a swamp monster and a deaf janitor. Won best picture.
The film wasn't terrible, it had a generally positive flow, but it was somewhat disjointing watching Superman rescue a squirrel from a giant monster one minute while letting Lex Luthor execute a hostage while under a government sanctioned interrogation the next.
My suggestion is that they should have just gone ahead and made Superman and everyone else a cartoon. Or get a better dog. Ther's the Airbud movie (a relative masterpiece) where a real dog actor plays a professional athlete. All these strange elements robbed the film of intensity, making it feel more like a silly episode of Family Guy. Both lean into ridiculous premise.
There were MANY unintroduced Superheroes and villans. Basically, if you're a fan of Air Bud and Family guy, you'll love this film.