I like fantasy movies. If a movie adds a little bit of a fantasy element to it, I'll like it more. But adding magic and wonder to a movie can give it problems, too. Does this new power make sense to the world? Does the interaction of the fantastic elements with the real world make sense? I have a hard time respecting movies that haven't really thought everything through. Sadly, this movie fits into this category. Still, if you enjoy a sweet fantasy movie and don't really care too much about plot holes or realistic miscalculations, then you'll likely really enjoy this movie.
The Nutcracker and the Four Realms tells a version of The Nutcracker ballet. Clara is the star, going into another world, but there's a difference from the ballet. In this story, she's a princess and the replacement for the queen, her mother who passed away recently. She soon gets embroiled in the politics and intrigue of this other world and the adventure is on!
While this might not be the best example of this type of movie, it's still pretty good. There are a few things that drop it down for me, but I think most people will still really like it. The characters aren't anything special, and the plot is a bit weak, but that's forgivable. It's a sweet movie, and I think most will enjoy it.