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Slave of the Cannibal God (1978) movie poster

Plot Summary

Slave of the Cannibal God (1978) Plot Summary Explained

Release, runtime and language
1978 · 102 mins · Italian
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Directed by
Sergio Martino
Starring
Stacy Keach, Ursula Andress, Akushula Selayah, Franco Fantasia, Luigina Rocchi, Antonio Marsina

A woman and her brother journey to the dense jungles of New Guinea in search of a missing expedition led by her husband. As they trek deeper, they discover a terrifying cult devoted to a cannibal deity, whose rituals are driven by death and a thirst for blood, threatening the siblings at every turn.

On this page (6)
  1. 1 Where to watch
  2. 2 What happens: full plot
  3. 3 Plot questions answered
  4. 4 Movie threads
  5. 5 Movies like Slave of the Cannibal God
  6. 6 Every angle
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Full plot summary · contains spoilers

What Happens in Slave of the Cannibal God: Full Plot Summary

The whole story of Slave of the Cannibal God (1978) explained, from the opening scene to the final frame: every key event, every twist and what it all adds up to. Read it as a quick recap before the sequel, to check a scene you missed, or to finally understand what really happened.

Susan Stevenson, [Ursula Andress], is trying to find her missing anthropologist husband, Henry, in the jungles of New Guinea. She and her brother Arthur Weisser, [Antonio Marsina], enlist the services of Professor Edward Foster, [Stacy Keach], who thinks her husband might have headed for the mountain Ra Ra Me, which sits off the coast on the island of Roka. The locals say the mountain is cursed, and the authorities will not permit expeditions there, so the searchers secretly slip into the wild to begin their quest. They make it to the island and, after facing dangerous wildlife such as anacondas, alligators, and tarantulas, meet another jungle explorer, Manolo [Claudio Cassinelli], who has been staying at a nearby mission camp and agrees to join the expedition.

Each person arrives with their own hidden motive for coming to the island, beyond finding Susan’s missing husband. Susan and Arthur are secretly after uranium deposits. Foster explains that he had been on the island a few years earlier, was captured by a tribe of primitive cannibals, and has returned only to wipe them out if they still exist. The group presses on toward the mountain, and tragedy soon follows: Arthur is killed, and Manolo and Susan are captured by the cannibals and taken to their cave. There, they discover the natives worshiping the skeletal remains of Susan’s husband, and they find a photo of Henry and Susan as a couple. The tribe can hear Henry’s Geiger counter ticking and believe his heart is still beating. They treat Henry as their Cannibal God, and Susan is spared while others are consumed. The tribe coats her entire body with an orange cream by two native girls, first appearing as a honey-like torture, but it marks her transformation into a Cannibal Goddess after she tastes and eats Arthur’s cooked remains. A cannibal’s attempt to rape Susan is thwarted when the aggressor is emasculated and killed as punishment. Manolo is tortured and bound, but Susan and Manolo eventually manage to escape, having endured a brutal ordeal.

Last updated: October 09, 2025 at 11:23

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Plot questions answered

Slave of the Cannibal God Plot Explained: Your Questions Answered

The questions people ask most about Slave of the Cannibal God (1978): what happens in the confusing scenes, why the characters do what they do, the twists, hidden details and what the ending means. Each answer contains spoilers.

Q1

Why does Professor Foster want to return to the island?

Professor Foster reveals that he had previously visited the island years earlier, where he was captured by a tribe of primitive cannibals. He has returned with the expedition not to find Henry, but specifically to locate and wipe out the cannibal tribe if they still exist, making his personal vendetta against them the true motive for joining the journey.

  • professor foster
  • cannibals
  • vengeance
  • island
  • previous expedition
Q2

What are Susan and Arthur really looking for?

Beyond finding Susan's missing husband Henry, both siblings harbor a secret agenda: they are actually searching for uranium deposits on the island. This hidden motive explains why they were willing to undertake such a dangerous expedition and why they kept this information from Foster initially.

  • uranium
  • susan
  • arthur
  • hidden motive
  • expedition
Q3

Why do the cannibals worship Henry as a god?

When the cannibals examine Henry's body, they hear his Geiger counter still ticking and mistakenly believe his heart is still beating. This supernatural-sounding signal convinces them that Henry possesses divine qualities, leading them to worship his skeletal remains as their Cannibal God and preserve his body in their cave.

  • henry
  • cannibal god
  • geiger counter
  • worship
  • skeleton
Q4

Why is Susan spared by the cannibals?

The cannibals discover a photo of Henry and Susan as a couple among his belongings. Recognizing her as the wife of their revered Cannibal God, they spare her life initially. However, this spared status is conditional and changes once Susan participates in their ritual cannibalism.

  • susan
  • spared
  • cannibals
  • photo
  • henry wife
Q5

What triggers Susan's transformation into a Cannibal Goddess?

Susan is smeared with orange cream by native girls as part of the ritual. However, her full acceptance into the tribe comes after she tastes and eats the cooked remains of her own brother Arthur. This act of consuming human flesh within their ritual binds her to the cannibalistic worship, transforming her into their Cannibal Goddess.

  • susan
  • cannibal goddess
  • transformation
  • arthur remains
  • orange cream
Q6

Why is the would-be rapist killed and emasculated?

When a cannibal attempts to rape Susan during her captivity, his aggression is halted and he is immediately emasculated and killed as punishment. The tribe's leader apparently enforces this penalty, suggesting that Susan, as the chosen Cannibal Goddess, is off-limits for such violation of the ritual's sacred boundaries.

  • susan
  • rapist
  • killed
  • emasculated
  • cannibal punishment
Q7

How do Susan and Manolo escape from the cannibal cave?

After enduring brutal torture and ordeal while bound in the cave, Susan and Manolo manage to devise an escape plan. They free themselves from their bonds and successfully flee the cannibal cave into the surrounding jungle, surviving their harrowing captivity despite the extreme violence they endured.

  • susan
  • manolo
  • escape
  • cave
  • cannibal jungle
Q8

Why does Arthur die on the expedition?

Arthur is killed during the group's ascent up the mountain Ra Ra Me. His death occurs as the party reaches the base of the mountain, marking the first major tragedy of the expedition. His demise also sets the stage for the subsequent horror, as his remains become central to the cannibal ritual.

Foreshadowing: The timeline earlier notes dangerous wildlife encounters that test the group's resolve and foreshadow the harsher ordeals ahead at Ra Ra Me.

  • arthur
  • death
  • ra ra me
  • mountain
  • killed
Q9

What does the Geiger counter mean to the cannibals?

The cannibals hear the ticking sound coming from Henry's Geiger counter, which was still attached to his equipment. Unable to understand the technology, they interpret this rhythmic ticking as evidence that Henry's heart is still beating, leading them to believe he is a living deity rather than a dead body.

  • geiger counter
  • ticking
  • henry heart
  • cannibals
  • technology
Q10

Why is Manolo tortured by the cannibals?

Manolo is captured along with Susan and is tied up and tortured while the cannibals consume the other members of the expedition. Unlike Susan, who is spared due to her connection to Henry, Manolo does not receive any special status and becomes another victim of their ritualistic violence and consumption.

  • manolo
  • torture
  • tied up
  • cannibals
  • captured

Movie threads

More Movies Like Slave of the Cannibal God, by Mood & Story

Curated lists built around what makes Slave of the Cannibal God tick: the same mood, the same kind of story or the same emotional payoff. Each list explains why these movies belong together.

Jungle Expedition Horror movies like Slave of the Cannibal God

A quest into an untamed wilderness turns into a desperate fight for survival. If you enjoyed the perilous journey into the New Guinea rainforest in Slave of the Cannibal God, you'll find similar terror in these movies. This thread groups films where characters venture into untamed jungles, only to face deadly threats from cannibal tribes, ancient curses, or the brutal environment itself. Explore more stories of survival horror in the heart of darkness.

  • primal
  • dangerous
  • oppressive
  • brutal
  • suspenseful
  • grim
  • Tone: dark, brutal, primal
  • Pacing: steady, methodical descent
Why these movies?

The story pattern: The narrative typically involves a linear journey into a remote, dangerous location, driven by a goal like a search mission or scientific research. The story unfolds as the characters are systematically stripped of their modern comforts and confronted with a primal, often cannibalistic, society that views them as intruders or sacrifices. The plot focuses on the physical and psychological breakdown of the protagonists as they fight to escape.

Why they belong together: These movies are grouped by their shared setting and core conflict: civilization versus primitivism. They create a cohesive experience through the oppressive atmosphere of the jungle, the constant threat of graphic violence, and the theme of outsiders being consumed—literally or metaphorically—by a world they do not understand.

Cult of Terror movies similar to Slave of the Cannibal God

Characters stumble upon an isolated society with terrifying, blood-soaked rituals. Fans of the cannibal cult in Slave of the Cannibal God will appreciate this collection of films centered around sinister, isolated societies. Discover movies where characters uncover communities with deadly secret rituals, fanatical beliefs, and a thirst for blood. If you liked the themes of ritualistic terror and hidden motives, these stories deliver a similarly dark and unsettling experience.

  • unsettling
  • suspenseful
  • brutal
  • grim
  • ritualistic
  • oppressive
  • Tone: dark, unsettling, grim
  • Pacing: steady, suspenseful build
Why these movies?

The story pattern: The narrative pattern involves investigation and discovery, leading to captivity. The protagonists initially observe the cult's rituals from a distance, but are soon captured and forced to participate or become victims. The story explores the power dynamics within the cult, the logic of its beliefs, and the immense trauma inflicted upon the outsiders, who must use their wits to survive a system designed for their destruction.

Why they belong together: Movies in this thread share a core antagonist: a fully realized, menacing cult. They are united by themes of fanaticism, ritualistic violence, and the violation of bodily autonomy. The experience is defined by its unsettling exploration of twisted belief systems and the graphic, often ceremonial, nature of the horror.

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Every angle

Slave of the Cannibal God (1978) Explained: Plot, Timeline & Characters

Everything about Slave of the Cannibal God in one place: what happens in the plot summary, the timeline in chronological order, the characters and meaning and a spoiler-free summary. What's After the Movie adds the cast, box office and post-credit scenes.

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