The plot was decent, characters were OK even if there were a few too many of them. The action was intense for a PG movie, perhaps a little too much. I probably would have rated this PG-13 and then not brought my 5yo daughter. She was jumping out of her seat several times when scary monsters with fangs break onto the screen unexpectedly with loud noises.

The worse part was the animation style though. There are lots of reviews praising this but either my theater messed up, or the animation style was just terrible. It was like watching a 3D movie without your 3D glasses. Everything in the background had that 3 color hue around it. Foreground stuff was fine, but it simply made the background art look terrible. I had to look around the theater a few times, and double check my tickets to make sure we hadn't gotten into a 3D movie without the glasses. If anyone calls this an art style, I'll call it cheap editing to save money on making a 3D version.