This is all a windup to this: “Jurassic World Rebirth” tries very hard to evoke that same moment of awe. But in the story, the ubiquity of the dinosaurs has left humanity feeling bored and annoyed, cutting the feet out from under those moments. And it’s starting to feel like the movies are getting bored, too.

With a terrific cast — both human and dinosaur — and worthy special effects, “Jurassic World Rebirth” is an improbable triumph.

Despite too many two-dimensional characters, a bloated story, and forgettable mutant dinosaurs, Rebirth still manages to deliver some of the franchise’s best set-pieces. Jonathan Bailey and Scarlett Johansson stand out in this unscary sequel that needed a little more time in amber before being extracted.