The story kicks off with animated comic book panels that reveal a grim future dominated by mass organ failures. Enter GeneCo, a giant corporation offering chic and accessible organ transplants. However, a sinister twist lurks — fail to meet your payments, and you’ll face not a typical debt collector but ruthless organ-reclaiming assassins known as Repo Men.

The narrative unfolds into a bloody epic featuring a dying CEO, his entitled offspring, a grave-robbing misfit, a father concealing a deadly secret, and a terminally ill teenager discovering the world beyond her confinement. If you’ve ever imagined a fusion of “Saw,” “The Rocky Horror Picture Show,” and “Blade Runner,” “Repo!” delivers just that experience.

Originally, “Repo!” was a 10-minute rock opera titled “The Necromerchant’s Debt,” created by Darren Smith and Terrence Zdunich. It premiered to acclaim in 2001, prompting the duo to expand it into a full stage show. They connected with Darren Lynn Bousman, pre-“Saw II,” who was fervent about the project. Bousman directed the stage version, which enjoyed extended runs due to sell-out performances. Following his success with the “Saw” franchise, Bousman produced a proof-of-concept short for “Repo!,” leading to Lionsgate financing the film.

Initially, the film’s musical numbers may not immediately captivate and might deter casual audiences. However, repeated listens reveal catchy lines like “graaaaaaaaaves” and “a little glass vial” that soon become unforgettable. The soundtrack’s appeal is bolstered by the vibrant performances from a talented cast, who inject playful enthusiasm into the film with their spirited vocal delivery.

While it didn’t land with critics and woefully underperformed at the box office, “Repo!” became a cult movie sensation. It drops you right into its dystopian setting with a whole lot of upfront baggage and not nearly enough time to digest it all. The film will often halt narrative momentum to relay important character beats in comic-based flashbacks that reveal greater context. It’s a messy movie that clearly needed a bigger budget to reach its full potential, but “Repo!” possesses such an imaginative punk rock sincerity that you can’t help but admire its existence.

Upon your first viewing, the songs don’t quite have that immediate pop and seem like they would be alienating to casual moviegoers. Listen to them enough times, however, and lyrics like “graaaaaaaaaves” and “a little glass vial” will enter your lexicon in no time. The soundtrack to “Repo!” plays as well as it does because of the insanely talented cast members who bring such a silly and enthusiastic energy to the whole affair with their committed vocal performances.

Making a movie intentionally camp is a lot harder than it may appear. “Repo!” succeeds because it’s a horror rock opera that’s genuinely attempting to provide emotional stakes while body parts are eviscerated. Nowhere is this better demonstrated than in the gonzo performance of “Repo!” MVP Anthony Head as Nathan. What starts out as an overprotective yet timid father archetype transforms into something much grander as he slowly unveils his gleefully sadistic side: He’s the Repo Man his daughter Shilo (Alexa Vega) has heard so much about, but he can’t bring himself to tell her. Draped in a black leather medical outfit, Nathan sings about how he’s the villain of the story, all while slicing up a guy he has in his hide-away lair behind the fireplace.

Head is a bundle of fun here, but his is far from the only compelling performance. There’s Paris Hilton as the Zydrate-addicted daughter of GeneCo CEO Rotti Largo (Paul Sorvino), whose face can’t seem to stay on, in addition to Nivek Ogre and horror legend Bill Moseley as her screw-up brothers. “Succession” fans ought to get in on “Repo!” considering it’s partially about a family of freaks and their restless father who doesn’t see them as heirs, nor serious people. One of the more surprising additions to the supporting cast is soprano superstar Sarah Brightman as Blind Mag, a singer whose GeneCo contacts make her look like the most insanely beautiful sleep paralysis demon you’ve ever seen. The cult oddity known as “Repo!” is catnip for horror fans who love dirty-looking sets, rock music, and lots of practical gore effects.