Tween Ace (Justin Flitter) loves animals as much as his now absent dad (Jim Carrey does not appear in the movie!). His mother (Ann Cusack) even took a job at the zoo, so her son could be near animals quite often. Unfortunately, though, she does NOT want Jr. Ace to become a pet detective, for she has seen how danger lurks even in such a mild-seeming endeavor. But, he can't resist! He keeps doing a bit of the stuff on the sly. One day, things start coming in fast and furious, First, many classmates are missing their pets, from koi fish to cats to you name it. Huh, what's afoot? Jr. Ace vows to find out. Then, the zoo's precious panda, Ting Tang, gets bear-napped and, unbelievably, officials blame Mrs. Ventura and throw her in jail! Wow-eeeee! There is no one to care for Ace but his long missing grandfather (Ralph Waite). He shows up with a trio of pets, one of which appears to be a comatose dog, and tells Ace about the family's long tradition of creature love. Why, didn't the clan have Charles Darwin Ventura and Jacques Cousteau Venture showing the way? Therefore, he encourages Jr. Ace to continue looking for the missing animals. But, gosh, there are few leads. Our Ace may need the help of a lovely female classmate and another science oriented student named A Plus. Could there be a trail of money to follow? You bet! This is really a cute new addition to a funny series, without objectionable material. No, Flitter really doesn't look or act much like Carrey, although he tries. But, he is funny in his own way and so are the rest of the cast. Sets, costumes, hairdos (there is the Ace pompadour, you know), script and direction are all working to make one great little watch. Ace your family's weekend by grabbing the junior version!

I'm an MST3K fan, so my perspective might be a bit skewed. But you remember Eddie Murphy's stand-up routine about what his stand-up was like when he was a kid? Trying to be raunchy before he could say cuss words or talk about sex? That's what "Ace Jr" felt like to me, like an unsophisticated Max Fischer stage play about his favorite Jim Carrey creation. It's a very derivative film that can't decide if it's for kids or not. The writing has the quality of a typical Disney channel sitcom, and brings back all the lines and bits from the original in the most awkward and cringe-inducing ways. I'm not sure if anyone that ends up liking "Ace Jr" would even like the original films; certainly, original fans would grit their teeth through a screening of this.Nobody watches any "Ace Ventura" for the plot; these movies live and die by the lead. The kid playing "Ace Jr" reminded me more of Jack Black than Jim Carrey, better when he wasn't trying to do Ace Ventura imitations. There's a better movie in him somewhere...In the "Ace" franchise, it's about as good as an average episode of that Saturday morning cartoon, but weak sauce compared to the Jim Carrey films. If you thought the Ernest films were funny, you'll probably enjoy this. Actually, if you thought Turkish Superman was funny, you might enjoy this, too...

I don't normally write reviews for movies but after seeing this movie, I took the time to create an account and voice my disgust / deter other people from wasting their time watching this film.Watching the first Ace Ventura films, it's easy to say they were at least decent films and hence entitled to the mid-ratings they received. Watching the third installment makes it easy to say it was worth of not only less then what it has (2/10) but the negatives if only it were possible.The storyline is a watery carbon copy of the other two films (i.e missing animal needs to be found) with nothing new added to it besides a goofy child actor who's performance was abysmal and mindless, childish jokes. The writers seem to have directed the movie only at toddlers. It uses potty humor very heavily and no-one (not even toddlers) would find it appealing. A big mistake by the producers and executives who even approved this waste of money. It's a big disappointment to the Ace Ventura franchise.

Now I went into this thinking the exact same thing as all of you. That this movie is going to suck, that its going to be the worst movie out there. But to be completely honest with you, it was cute and funny. It was a cheesy movie, but if you take it for that, just being a cheesy movie, than you'll like it. Its not a master piece and not nearly as good as the originals. But it is certainly a lot better than other sequels. The main character is actually pretty funny and makes good use of the old Ace Ventura lines, while throwing in a bit of his own style in there. So if your looking for a good laugh from a movie than I would honestly recommend it.