The overall story is a prequel to the first movie and humanity preparation for what they are going to do to solve the solar crisis. But there are so many concurrent narratives and acts and characters that made me a bit confusing about what's going on and how everything just connects together. Just to list a few, the movie has:
- UN plot: in which the ambassadors in the UN are planing and fighting with each other on what to do to save the world.
- AI plot: the dead daughter of the scientist backed up as an AI in the main quantum computer that can make the wandering earth project start.
- The "main character" plot: following the guy who saved the space elevator and his family and his role in starting the wandering earth project.
- the small plots: you have some other characters with small roles in the movie who takes part in some specific scenes, they are there just to fill the gap and that's it.
Also like the first movie there are some pardonable science fiction flaws such as flying on top of the space elevator, that wouldn't happen as the space elevator is tighted to the equator, you'd just feel slightly less gravity. But exploding the moon with nuclear bombs is not pardonable, even if you mine every single bit of uranium on earth and make a big nuclear bomb you wouldn't be able to explode the moon. Yet they made the explosion on the moon in the way it would be like a sphere not a mushroom.
My feeling is that they try to mix up a lot of concepts together in the same movie that would be better explained in a series or in other sequences. In the end, you get a salad.
Despite my criticism above, the movie is quite enjoyable! It is a good salad, like caesar salad. The movie has beautiful visuals and top notch CGI. The soundtrack and sound effects are better than the first movie. The story approaches very interesting topics such as Human Conscience preservation and global unified decision making.
What I like the most is the fact that they made the movie thinking on the international audience as the movie contain characters from multiple countries and everyone kinda just speak their languages. In this case we get characters from countries that are usually not in Hollywood movies such as a guy from Ghana and Brazilian female astronaut.