Year: 1983
Runtime: 89 min
Language: English
Director: George P. Cosmatos
A meticulous banker’s life is thrown into chaos when a giant rodent takes residence in his meticulously renovated Manhattan brownstone. He finds himself in a desperate battle to protect his home and livelihood as the creature causes increasing damage. As he struggles to adapt and survive, he's forced to confront deeply buried anxieties and the raw instincts that exist even in the heart of the city.
Warning: spoilers below!
Haven’t seen Of Unknown Origin yet? This summary contains major spoilers. Bookmark the page, watch the movie, and come back for the full breakdown. If you're ready, scroll on and relive the story!
Read the complete plot breakdown of Of Unknown Origin (1983), including all key story events, major twists, and the ending explained in detail. Discover what really happened—and what it all means.
In a moment of transformation, Bart Hughes, a seemingly unremarkable investment banker by day, is thrust into a life-altering predicament. Having just turned down a family vacation in Vermont with his wife, Meg, and their young son, Peter, he soon learns that a crucial project meant to promote his career has been handed over to his colleague, James Hall. This setback is compounded by the added pressure from his boss, Eliot Riverton, who assigns him the daunting task of developing a comprehensive reorganization plan for the company’s branch offices, all while racing against a tight two-week deadline.
As Bart attempts to navigate these challenges, he faces an even more pressing dilemma: a determined female rat has invaded his home. What first appears to be a minor inconvenience—an issue with the dishwasher leading to flooding—quickly spirals into chaos as Clete, the superintendent of a nearby apartment, exposes the substantial threat posed by the rodent. The seasoned tenant’s insights force Bart to reckon with the unforgiving realities of urban wildlife.
With escalating tensions, Bart’s often futile attempts to capture the rat only serve to aggravate the situation. His library research uncovers unsettling facts about rodents, which he inadvertently shares during a dinner party, leading to spoiled appetites and perplexed guests. As the days unfold, Bart becomes increasingly desperate, turning to a hardware store salesman for dire advice on pest control.
The rat’s campaign of destruction escalates, culminating in a spine-chilling moment where Bart wakes to find the creature atop his toilet. This shocking encounter drives him to take extreme measures, culminating in a perilous showdown with the mother rat, transforming this ordinary conflict into a profound struggle for Bart’s identity, control, and the very essence of his life.
As the day at the office unfolds, Eliot acknowledges Bart’s hard work but can’t ignore the visible stress radiating from him. Bart insists that his troubles aren’t work-related and anticipates they will soon pass. However, as the clock ticks towards five, he shares a taxi ride with his insightful secretary, Lorrie Wells, who hints at the underlying marital issues troubling him. Though Bart makes an attempt to connect further, Lorrie’s attention is captured by the incessantly scurrying rat. In an effort to combat this unwelcome intruder, Bart decides to adopt a stray cat, only to be left devastated by its tragic demise shortly thereafter, symbolizing the unrelenting menace of the rat problem.
Bart’s struggles are compounded as he attempts—yet fails—to engage an exterminator, while his pleas for Meg to return from her vacation go unanswered. With tension mounting, he retreats into the darkness of his home, armed with a baseball bat, ultimately discovering that the report he had diligently prepared lies in ruins, chewed to shreds by the merciless rodent.
Emerging the following morning, disheveled and desperate, Bart confronts Eliot with the bittersweet revelation of his personal battles. In a moment of clarity amidst his turmoil, Eliot pragmatically advises Bart against exposing his colleagues to his current disarray.
Undergoing a chaotic evening, Bart injures himself while constructing a rattrap, leading him to seek refuge in a whiskey bath. Here, he drifts into a dreamlike state where the harsh realities are superseded by idyllic family reunions—only for this bliss to be shattered by the menacing pursuit of a rat that threatens his loved ones. Upon regaining consciousness, he finds himself in a life-or-death struggle with the wicked rodent, which now seems to embody all his fears.
As his friends attempt to reach him over the phone, thwarted by the rats that sever their connection, Bart prepares for a climactic confrontation. Donning protective gear fashioned from household items, he primes himself for a showdown unlike any other, unleashing his frustrations on the creature. The fierce skirmish causes chaos in his basement, culminating in the destruction of everything in sight. When the clash ends and Bart emerges from the wreckage, he is met with the concerned faces of Meg and Peter upon their return, prompting Meg to question the state of their home. Bart’s flippant response, “I had a party,” masks the hidden chaos of his reality, leaving the genuine strife of his struggle unspoken.
Last Updated: November 17, 2024 at 22:35
Discover curated groups of movies connected by mood, themes, and story style. Browse collections built around emotion, atmosphere, and narrative focus to easily find films that match what you feel like watching right now.
Stories where a safe space becomes a psychological battleground.If you liked the tense battle for survival in Of Unknown Origin, explore these movies where a home becomes a fortress under siege. These stories feature protagonists pushed to their limits by a relentless intruder, creating similar feelings of claustrophobia and psychological strain.
Narratives in this thread follow a pattern of intrusion, escalation, and desperate defense. A protagonist's orderly life is shattered by a threat that invades their personal space. The conflict is intensely focused, often unfolding in a single location, as the character's sanity and resourcefulness are tested in a high-stakes, close-quarters confrontation.
These movies are grouped by their shared focus on the home as a primary setting for horror and psychological tension. They create a similar vibe of anxious claustrophobia and the unsettling feeling of a safe space turning hostile, driven by a steady, escalating pace and high intensity.
Characters whose meticulous nature spirals into a single-minded, destructive fixation.Fans of Of Unknown Origin will appreciate these films about characters consumed by a singular, all-encompassing goal. Watch as meticulous plans give way to primal desperation in these tense psychological thrillers and dramas about the cost of obsession.
The narrative arc follows a character's transformation from competence to compulsion. A problem disrupts their ordered world, and their attempts to solve it methodically fail. This failure triggers a deeper, more primal obsession, leading them to abandon reason and social norms in a protracted, often solitary struggle that reveals their deepest anxieties.
These films share a core character journey: the spiral into obsession. They are united by a tense tone, a steady pacing that mirrors the character's increasing fixation, and a focus on the psychological strain of battling an opponent that becomes a personal demon.
Don't stop at just watching — explore Of Unknown Origin in full detail. From the complete plot summary and scene-by-scene timeline to character breakdowns, thematic analysis, and a deep dive into the ending — every page helps you truly understand what Of Unknown Origin is all about. Plus, discover what's next after the movie.
Track the full timeline of Of Unknown Origin with every major event arranged chronologically. Perfect for decoding non-linear storytelling, flashbacks, or parallel narratives with a clear scene-by-scene breakdown.
Discover the characters, locations, and core themes that shape Of Unknown Origin. Get insights into symbolic elements, setting significance, and deeper narrative meaning — ideal for thematic analysis and movie breakdowns.
Get a quick, spoiler-free overview of Of Unknown Origin that covers the main plot points and key details without revealing any major twists or spoilers. Perfect for those who want to know what to expect before diving in.
Visit What's After the Movie to explore more about Of Unknown Origin: box office results, cast and crew info, production details, post-credit scenes, and external links — all in one place for movie fans and researchers.
Discover movies like Of Unknown Origin that share similar genres, themes, and storytelling elements. Whether you’re drawn to the atmosphere, character arcs, or plot structure, these curated recommendations will help you explore more films you’ll love.
Of Unknown Origin (1983) Scene-by-Scene Movie Timeline
Of Unknown Origin (1983) Movie Characters, Themes & Settings
Of Unknown Origin (1983) Spoiler-Free Summary & Key Flow
Movies Like Of Unknown Origin – Similar Titles You’ll Enjoy
Rat (2001) Movie Recap & Themes
Rats (2016) Plot Summary & Ending Explained
Willard (2003) Film Overview & Timeline
Willard (1971) Spoiler-Packed Plot Recap
The Mutation (2021) Spoiler-Packed Plot Recap
Mulberry Street (2006) Ending Explained & Film Insights
Rats (2003) Plot Summary & Ending Explained
Rats: Night of Terror (1984) Spoiler-Packed Plot Recap
The Demon Rat (1992) Full Summary & Key Details
Ratboy (1986) Complete Plot Breakdown
Death Of The Rat (2024) Story Summary & Characters
Ratboy (1986) Story Summary & Characters
Night of Fear (1973) Plot Summary & Ending Explained
Ben (1972) Plot Summary & Ending Explained
The Rat Savior (1976) Spoiler-Packed Plot Recap