A girl who's literally a dog gets proposed to by a bunch of other dogs, and the movie somehow makes this absurd setup work as actual romance. The comedy lands because it never winks at the premise, it commits completely to treating dog courtship like a real competition for her heart. You watch to see which suitor wins, then realize you actually care about the answer.
Cinterrier is a beautiful young lady, a terrier take on Cinderella, and she is the object of a great many marriage proposals. Every one of her suitors is a dog, and each hopes to be the one she accepts. The question at the center of the film is simple: which of them will finally win her heart? The result is a comedy fantasy that plays its fairy tale parody for laughs.