One of the humans turns traitor for no reason other than to extend the running time of the movie a bit. Yet between the three of them, they can only come up with one or two inspired scenes, and these involve exterior action without any character development. On the plus side, much of the horrible dialogue is drowned out by the blasting of second-rate alternative rock leftovers. The problem here lies in the attempt to mix these characters with smooth, three-dimensional CGI effects. The result looks a little like a battle between action figures and the Sunday comics.
Some filmmakers know that kids are smart and can handle adult-type stories.
This is a cheat, and it hurts the parents who take the kids to see the movie. If parents and kids can enjoy a movie together, on the same level, it promotes a kind of bond. If the parents have to sit quietly and grit their teeth, it makes for an altogether unpleasant experience on both sides. Here's my solution. It covers much of the same ground, but it is ten times more inventive, professional, and entertaining.