The actors are not very good, but they keep entertaining and you will not lose interest. You just keep watching (at least; I did) The head-characters play zoo rangers who are asked to save a specific butterfly called Del Oro. They have to find the cocoons of those butterflies and replace them in a safer environment. But that journey isn't as easy as it seems..
With no action-scene's, they don't bring the excitement like the first two movies. But they replace it with a lot of humor, that finds a way to entertain you for a hour and a half!