Well that's your problem then. This isn't a movie that spells out motivation or gives you a lot of exposition. But the story is there if you care to look. And if not, I don't know what to tell you.
I don't need things spelled out for me but it would be nice to be given a reason to care beyond characters growling lines at one another for two minutes between protracted action scenes.
If you got fulfilled by the characters and "story" in this movie, good for you. I didn't get it because I need more of a reason to care about a character beyond "this woman is really angry because she's not home." Sorry, for me the drama wasn't there for me to be invested in the character enough to go-for her Platoon-style knee-drop when realizing her home is gone.
It's the basest and thinest of ideas, "she misses home" and that's about all an action movie really needs when it comes to character motivations and background. Doesn't mean I have to care about her because she's got angst-filled eyes for the whole movie.
And the villain wants his wives back because.... "He's evil!"
Again, don't need anything deep here in this type of movie but I need something more than what's presented. Look at the movie "Die Hard," it doesn't "spell it out" for you or anything like that but it does establish the strained marriage between John and Holly and why it's that way, and the kind of person John is (career-devoted cop) and Holly is (career-driven business woman) before we get to the action where John fights to save his wife. We're even given a level of depth to Hans Greuber beyond "he's evil and wants money." Not so much in background and such but more depth than "evil."
It's possible to have a good action movie AND to have there be, I dunno, a story or for a character to have more than about as much dialogue as the PC in "Grand Theft Auto III."
The action in this movie is very, very good. I enjoyed the movie and had fun in it. I just wasn't given much of a reason to care about the characters, their goals, or what they were going through. That is my opinion. If you want to insult me, my taste in movies, my ability to feel for characters without "having things spelled out for me" knock yourself out.
But I didn't care about these characters or what they were going through and, really, the over-the-top action sequences quite didn't buy the movie the right kind-of-leeway to buy them that kind of hand-waving like the original does. I dunno, maybe it's just because movies are generally different these days and I've gotten used to that. But I can still watch older movies with thin character motivations and care so, it seems, here something wasn't done right because I didn't give a shit about these characters or what they were doing.
I dunno, maybe I missed something or a reason to care or some character trait to latch onto with these people other than "angry, angst, brooding, grunting." Whatever was there, apparently didn't work for me. It worked for you. Congratulations.
Want to insult my taste in movies and need for things to be spelled out to me some more?