🎯 Quick Overview
Trailer
- Director: Saul Bass
- Genre: Science Fiction, Horror, Thriller
- Release year: 1974
- Runtime (length): 1h 24min
- IMDb rating: 6.4/10 (10K votes)
- Rotten Tomatoes: N/A
😅 Plot Summary – Badly Explained
Smart ants build geometric dirt sculptures and gaslight some scientists into joining their ant cult, all because…reasons?
🍿 Phase IV: Detailed Plot Synopsis
Sudden Ant Evolution
Following a mysterious cosmic event, ant colonies in the Arizona desert begin to exhibit unusual behavior. They display heightened intelligence, advanced communication, and a coordinated effort to eliminate their natural predators. Their intricate social structures and engineering feats become increasingly complex and threatening to the local human population.

The Scientists Arrive
Two scientists, Dr. Ernest D. Hubbs, a biologist, and James R. Lesko, a cryptographer, are dispatched to investigate the phenomenon. They set up a high-tech, sealed laboratory in the desert near the epicenter of the ant activity to study and understand their behavior. Their initial goal is to determine the nature of the ants’ intelligence and find a way to control or reverse their evolution.

Escalating Conflict
As Hubbs and Lesko delve deeper into their research, they find themselves in a direct conflict with the ants. The ants begin to strategically sabotage their equipment, manipulate their environment, and even launch direct attacks on the laboratory. A local girl, Kendra Eldridge, whose family was killed by the ants, becomes involved, adding another layer of complexity to the situation. The scientists find themselves increasingly isolated and threatened as the ants’ intelligence and strategic capabilities become clear.

⚠️ Spoilers and Ending Explained
🎬 Cast & Characters
- Dr. Ernest D. Hubbs (Nigel Davenport): A determined scientist who studies the ants and becomes increasingly obsessed with defeating them.
- James R. Lesko (Michael Murphy): The younger scientist who attempts to understand and communicate with the evolved ants.
- Kendra Eldridge (Lynne Frederick): A young woman rescued by the scientists, who serves as a link between humanity and the ants’ new world.
- The Ants (N/A): A highly intelligent collective of desert ants exhibiting unprecedented coordinated behavior and strategic thinking.
💬 Memorable Quotes
- Dr. Ernest D. Hubbs: “You did your major work applying game theory to the language of killer whales.” – Hubbs is introducing Lesko to the project, highlighting his unconventional expertise.
- James R. Lesko: “Well, it seemed cheaper than applying it to roulette.” – Lesko’s response to Hubbs, revealing his pragmatic and somewhat cynical approach.
- Dr. Ernest D. Hubbs: “Did you actually *succeed* in making positive contact with the whales?” – Hubbs questioning Lesko’s credibility, showing his skepticism.
- James R. Lesko: “Only with the emotionally disturbed.” – Lesko’s sarcastic reply to Hubbs, highlighting the difficulty of his previous work.
- James R. Lesko: “We talked!” – Lesko responds sarcastically to Hubbs’ follow up, adding a touch of humor.
💰Box Office
- Budget: N/A
- Domestic Gross: N/A
- Worldwide Gross: $289
💥 Phase IV Reviews
Personal Review
Okay, so I wasn’t entirely sure what was going on for the majority of this film, but I was riveted. The close-up shots of the ants were strangely beautiful and unsettling at the same time. I definitely felt a sense of dread, like something bad was about to happen, even during the slower parts. The ending was pretty strange, and I’m still not sure I get it, but it’s one of those movies that makes you think. I find myself pondering about the ant overlords.
- Who would enjoy:
- “Fans of 1970s science fiction”
- “Viewers interested in ecological themes”
- “Those who appreciate thought-provoking and ambiguous endings”
- “Fans of films like ‘2001: A Space Odyssey’ and ‘The Hellstrom Chronicle'”
- Content warnings ⚠:
- “Mild violence”
- “Disturbing imagery of insects”
- “Thematic elements of existential dread”
- “Brief scenes of animal death”
Professional Reviews
- IMDB: “An overlooked gem of 70’s Sci-fi. Uses its desert location to generate an atmosphere of isolation and paranoia. Fabulous photography of real ants add to the chilling atmosphere. Ending was a bit of a cop out but I’d still recommend this to any sci-fi fan
- IMDB: “Phase IV is not your average movie experience. The event has happened, so, there’s no need to express it with cheap special effects. Instead, the film builds up suspense with effective small shots of the ants themselves. Ants moving through technical equipment to “sabotage” it. Ants moving through their tunnels, reflecting a genuine “sinister” sense, a sort of “What are they planning, if anything?” atmosphere. Casual viewer will be disappointed by its rather quizzical ending because it doesn’t “resolve” the question
- IMDB: “Of course Bass, who as you know is Mr. Title Sequence Animator (Hitchcock, Golden Arm, Goodfellas…) is not what you’d call an Actor’s Director. But while I won’t say that the wooden vagueness of the dialogue scenes was deliberate, I will say that it is entirely functional. You don’t even see an actor for the first ten minutes – you see extended macro-photography of (real) ants plotting to take over the world, and THEY are brilliantly characterized.
Audience Reactions
Stunning ant photography makes the insects genuinely scary.: The movie has a unique atmosphere and visuals that leave a lasting impression.
Film buffs will take to a mind-blowing originality: This is one of the greatest movies ever made. The film begins media res and there is a sense that the world is off kilter somehow.
Overall Consensus: A visually stunning and unsettling sci-fi film with a slow burn and ambiguous ending that may not appeal to everyone, but is definitely worth a watch for fans of the genre.
Awards
🛠️ Behind the Scenes
- “Director Saul Bass, known for his graphic design work, was meticulous about Lynne Frederick’s American accent, making her repeat lines to eliminate any British inflection.”
- “The film features extensive macro-photography of real ants, capturing their behavior in detail.”
- “The film’s title is not revealed until the end credits, adding to the mystery.”
- “The geometric crop circles depicted in the film predate the appearance of real crop circles.”
🖥️ How to Watch Phase IV?
Currently, ‘Phase IV’ is not widely available on major streaming platforms like Netflix, Hulu, or Amazon Prime Video. You may find it available for rent or purchase on digital platforms such as Apple TV, Google Play Movies, or YouTube. Check your local listings for potential broadcast opportunities or physical media options.

🎥 Similar Movies
If you enjoyed Phase IV, you might like these similar films:
- The Hellstrom Chronicle (1971): Presents insects as the Earth’s future dominant species, using documentary-style footage.
- The Andromeda Strain (1971): Features scientists in a sealed lab environment trying to understand an alien phenomenon.
- Them! (1954): Classic giant ant movie that launched the killer insect subgenre.
- 2001: A Space Odyssey (1968): Offers thought-provoking experience, using striking visuals and ambiguous themes, similar to the abstract and open-ended nature of ‘Phase IV’.
🛒 Phase IV Related Products
- Microscope for Kids 80X-1600X Student Microscope: This is an educational microscope that is great for STEM learning. Includes a phone adapter to record what you see.
- Insect Lore Butterfly Growing Kit: Grow your own pet butterfly with this set
- Ant Farm Habitat: Build your own ant farm.
- Termite Terrace: Volume 1: The classic era from Looney Toons, Vol 1.
🎧 Soundtrack
Phase IV features a captivating soundtrack that enhances the movie’s atmosphere and emotional impact. Here are some notable tracks:
- “Main Theme” – performed by Brian Gascoigne
- “Ant Communication” – performed by David Vorhaus
- “Desert Ambience” – performed by Electronic Sound Effects
You can find the complete soundtrack on Amazon Music and Apple Music.
🤨 FAQ
Phase IV is a 1974 science fiction film about a pair of scientists who investigate unusual ant behavior in the Arizona desert, only to find themselves in a battle of wits and survival against a highly intelligent and organized ant colony.
The ending of Phase IV is ambiguous and open to interpretation. It suggests a potential merging of human and ant intelligence, with one of the scientists seemingly joining the ants and a surviving woman appearing to be transformed. The film leaves the audience to consider the future of humanity and its relationship with the ants.
Phase IV was primarily filmed in Eloy, Arizona, utilizing the desert landscape to emphasize the isolation and harsh environment of the story.
🔥 Bonus Content
MCU Phase 4 Films Ranked!
Wondering how the latest MCU movies stack up? This video gives you a ranked list of Phase 4 flicks, and honestly, I’m not sure I agree with the number one pick. Check it out and see if you do!
5 Worst MCU Films!
Ever wondered which MCU movies critics consider the biggest duds? This video reveals the bottom 5, and I’m actually a little surprised by some of the choices. I wonder if you’ll agree!
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