It’s got a “name” or used to be “name” cast, a compact setting, a twisty plot and the director of “Sweet Home Alabama” behind the camera.

“Unit 234” has the makings of a gritty B-movie that makes the most of its underdog status.

But those twists turn in on themselves as the picture’s plot contorts into a pretzel dunked in one lapse in logic after another. The action passes by in what seems like slow motion.

The location and a pretty good cast giving decent performances are squandered in the process.

The setting is a lonely, potentially claustrophobic 24 hour self-storage facility on the outskirts of Jacksonville in the northeastern corner of the Self-Storage State. And if you don’t think “24 hour” denotes “We rent to sketchy people” you’ve never been to one of those joints after dark.

It isn’t exactly Girl Scout cookies ready for distribution or Aunt Frida’s mid-century modern furniture that has folks come poking around for in the wee hours.

“Orphan” alumna Isabelle Fuhrman plays Laurie, a 20something saddled with the family business after her parents died and ready to learn the hard way that she’s the only dependable Gen Z employee she knows. Her big vacation to see her beau (Anirudh Pisharody) is derailed by an underling who bails on taking her shifts from her.

And wouldn’t you know it, that’s the rainy night in Florida when somebody stashes a body in “Unit 234,” one that might wakeup from the hospital gurney it’s handcuffed to.

A prologue introduced us to blood-in-his-hanky sick rich guy (Don Johnson) who wants that body or person or what’s in that body or person. He rides around in a chauffeured G-Wagon and has minions who will shoot other minions for him if he doesn’t get what he wants.

Showing up at Schuyler’s Self-Storage after dark without a key runs him afoul of Laurie’s “procedures” and rules. So cold-blooded Jules’ henchmen will have to do this the hard way.

As she opens the unit herself and finds a guy still wired up to med fluids and such, who wakes up blabbering about “organ harvesting,” she has words for her foes when she and Jules cross paths again.

“You people are going straight to HELL!”

Jules? “Yeah, I think I’m OK with that.”

A harrowing night of using what’s in the other units to fight back or get away or at least get out the word about their peril ensues. Yes, “storage units are like a box of chocolates.”

Laurie learns the mistake of waking a sleeping-on-the-job Florida sheriff’s deputy and expecting help.

Director Andy Tennant — “Hitch” and “Fool’s Gold” were also his — isn’t known for thrillers. And that shows in the picture’s slack pacing. A bit of speed might have rushed the viewer past all the “Wait, in what alternate reality does this shooting/reaction/behavior make sense?” moments.

But the cast is game, with Huston properly frantic, Johnson oozing menace and Fuhrman dialing up the pluck and self-preservation savvy in her role.

It’s not their fault “Unit 234” turns out to be a blood-stained episode of “Storage Wars.”

Rating: 16+, bloody violence, profanity

Cast: Isabelle Fuhrman, Don Johnson, Jack Huston, Christopher James Baker and Anirudh Pisharody

Credits: Directed by Andy Tennant, scripted by Derek Steiner. A Brainstorm Media release on Amazon Prime.

Running time: 1:28