I have not read the childrens books that the story is supposed to be based on, so took the movie "as is".
As an adult I thought the movie to be pretty okay. I've seen better ones, but those probably also had a production cost that was significantly higher.
Somewhat annoying is the parent's continuous ignoring of what kids wanted to say, but that's a common part in the storyline of movies that have kids as heroes.
However, it's marketed as a family-movie and has no age-limit in the PG-rating. The movie contains some intense and frightening scenery though, especially when the opposing superpowers were in play, that made my five-year cry out loud, look away and want to go home.
In my opinion a PG-7 would be more appropriate and my rating is based on that.
