Enclave research colony
In the past, Enclave researcher Dr. Siggi Wilzig helps breed Belgian Malinois dogs. He's disturbed by the facility's policy of incinerating newborn puppies that weigh less than ten ounces, so he falsifies records to spare the life of an underweight female puppy. The dog is given the designation CX404. Over the years, Wilzig has specially trained the dog and cares for her while working on an unauthorized research project. The fruit of the project is a small pulsating blue bead that Wilzig injects into his neck. One day, one of his co-workers discovers the project and reports him, but CX404 mauls and kills him to protect her master. Wilzig and CX404 flee the facility under gunfire from a turret.

Los Angeles ruins
In the present, Lucy wanders through the ocean-side ruins and discovers the long-dead remains of a family. They apparently poisoned themselves with suicide pills from a bottle labeled "Vault-Tec Plan D". As night falls, she sets a campfire and turns in for the night.

Lucy is woken up in the middle of the night by growling, and finds CX404 staring at her. Moments later, CX404 takes notice of a nearby Radroach, and swiftly mauls it to death. Lucy then notices Wilzig sitting in a chair by the fire. He talks about how radroaches evolved to become larger and more predatory when they evolved from cockroaches. Wilzig urges Lucy to go home, doubting her ability to adapt to the dangerous and violent wasteland. Lucy asserts that she is not going back without her father. Wilzig suggests that her desires will change when she becomes a "different animal" and leaves with CX404.

The Wilds
The next day, as a vertibird flies them to Filly, Maximus attempts to bond with Knight Titus to no avail. Titus then orders their pilot to touch down early out of boredom. The two trek through the Wilds while Maximus carries the luggage. Simultaneously, Wilzig and CX404 stop to rest by some discarded chemical waste barrels. CX404 enters a nearby cave and leaves carrying a human hand in her mouth. A horrified Wilzig realizes a dangerous monster is nearby. Later, Titus and Maximus happen upon the cave and find evidence that their targets were there. Titus orders Maximus to investigate inside the cave, before being attacked by a yao guai who destroys his weapon. Titus attempts to flee from the yao guai, but it catches up to him outside the cave and manages to mortally wound him before Maximus is able to shoot it in the head. Maximus removes the helmet off Titus, who orders him to administer a stimpak to him while blaming him for the attack and verbally abusing him. Disgusted by his cowardice and tired of the mistreatment from him, Maximus withholds treatment from Titus. Titus warns his squire that he'll be executed for allowing his charge to die, but Maximus claims he'll be forgiven if he brings back the target.


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Farmer house
Lucy encounters a farmer in a house in the desert, attempting to fix a water filter by putting sand in it. She offers him a sip of her drinking water, and he drinks the entire bottle. He directs her to Filly despite having never been himself; he claims people often get killed there, including several of his relatives. The farmer suggests that Lucy live with him and claims to be dying. She declines and starts heading towards Filly.

Yao guai cave
Maximus dons the dead Titus' T-60 power armor, which grants him incredible strength. In some ruins, he sees a chicken collector beating up a snake oil salesman and intervenes, setting the salesman free. He praises Maximus as a "scholar and a gentleman" and admonishes the farmer for punishing his "scientific curiosity." As the salesman runs off, the chicken collector tells Maximus he was beating the salesman for sexually molesting his chickens. Maximus sheepishly backs off and realizes his suit contains jets in the arms.

Filly
Lucy arrives in Filly, a settlement built in the remnants of an old junkyard in the middle of the woods. As she walks through the marketplace, she is disconcerted by the inhabitants' rudeness and lack of helpful information. Entering the downtown district through a short tunnel, she takes notice of a general store in the middle of the square, Ma June's Sundries, and decides to check it out. Descending into the square, she doesn't notice the Ghoul sitting in a rocking chair, watching the store intently as he fidgets with a small bottle.

Inside the general store, Lucy finds the place is filled with multiple items produced by Vault-Tec. The store owner, an elderly woman named Ma June, realizes Lucy is a Vault Dweller and laughs in her face. Her attitude hardens when Lucy mentions Moldaver and orders her to leave immediately. Lucy asserts the Vaults' mission to save America, but Ma June denounces the Vaults as "a hole in the ground for rich folks to hide in while the rest of the world burned." Lucy leaves, despondent. As she leaves the store, Wilzig and CX404 run into her as they arrive in Filly. His knowledge of her Vault surprises her, and he once more encourages her to go home. Ma June greets Wilzig, having expected him, and once again coldly tells Lucy to get on her way.

At that moment, the Ghoul reveals himself, and Ma June firmly reminds him that ghouls are banned from Filly. He ignores her and reports the large bounty out on Wilzig's head. Ma June reveals she's been paid to transport him out of Filly...prompting the Ghoul to suddenly pull out a gun and shoot Wilzig's left foot off. Ma June takes cover, and loudly offers a thousand bottle caps to whoever can kill the Ghoul.

A shootout breaks out as several Filly residents try to take out the Ghoul to take up Ma June's offer, only for him to promptly dispatch all of them. Amid it, the Ghoul helps himself to a handful of cherry tomatoes from a vendor and "pays" for them by dropping a fistful of caps on the ground. He takes several bullets in the back to little effect and kills the other shooters. Ma June is shot in her right leg and seriously injured as she tries to fire at the Ghoul. CX404 then attacks him in similar fashion to how she killed the Enclave scientist, but the Ghoul fights back and stabs her with a knife, critically wounding her.

While the shootout is ongoing, Lucy runs into Ma June's backroom and inspects her ledger, finding a transaction with Moldaver's name recorded in it. Hearing Wilzig's cries for help, she returns outside, and acting like she's the sheriff in an old Western movie, attempts to non-violently de-escalate the conflict and warns the Ghoul to stand down. The Ghoul, undaunted, steps forward, and Lucy shoots him in the heart with her tranquilizer gun. To her surprise, it doesn't work. He plucks it out of his chest, and calls it "a very small drop in a very, very large bucket of drugs" and aims his gun at her. At that moment, Maximus arrives in his power armor and orders the Ghoul to surrender. He tackles Lucy out of the way and shields her with his body as the Ghoul fires at her. While covering her, he briefly shows his face to her, and asks her to protect Wilzig while he engages the Ghoul. Lucy and Ma June help Wilzig into the shop while Maximus engages the Ghoul.

Inside, Ma June orders her assistant Barv to retrieve a prosthetic replacement foot for Wilzig from a box labeled "Jim's Limbs". Ma June fashions the foot to Wilzig's stump, a process that involves crudely shredding the end of it. Out of options, Ma June asks Lucy to take Wilzig to her client, and she declines until Ma June reveals her client is in fact Moldaver herself. She suggests using Wilzig as a bargaining chip and programs the coordinates into Lucy's Pip-Boy. Lucy escorts Wilzig out of the town as the fight outside grows heated. In the marketplace, they pass the snake oil salesman that Maximus earlier helped, and he claims to have a serum to regenerate Wilzig's lost limb. They ignore him and press forward.

The Ghoul quickly realizes Maximus is not very familiar with how to use power armor, and ultimately exploits this to overwhelm him. When Maximus gets his foot stuck in some floorboards, the Ghoul severs one of his breathing tubes, causing the armor to malfunction and jet him away. He crash lands in a nearby junkyard, ignored by a nearby raider using a toilet. Back in Filly, the Ghoul finds Wilzig missing from the shop. Outside, a dying CX404 whines from her injury. The Ghoul takes pity on the dog and heals her with a stimpak. Revitalized, she begins pursuing her master's scent while the Ghoul follows.


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Crashed satellite
Lucy holding a surgical ripper.
Lucy holding a surgical ripper.

The next day, Lucy and Wilzig stop to rest at a crashed Russian satellite near Los Angeles International Airport. Wilzig's injury has worsened, and he is visibly bleeding from his prosthetic limb; he claims he will die before reaching the destination. Lucy optimistically encourages him to press ahead, but he reveals that he has ingested a Plan D, calling it "the most humane product Vault-Tec ever made." He says he's still valuable to Moldaver if Lucy can bring his head to her and instructs her to decapitate him with his buzz saw. He calls her "Miss MacLean", which shocks Lucy as she hasn't divulged this to him at all, but he dies before he can answer her. Lucy grimly prepares to cut his head off as he requests.

Credits
The Brotherhood wants you
The Brotherhood wants you

The credits show the ruins of LAX. The sequence begins focused on a vertibird with a picture of Nuka-Girl with a blast mark on the face, with the text "Zap Em" written nearby. The camera zooms out, revealing a skeleton sitting against the vertibird and numerous other vertibirds parked in nearby hangers amidst barbed wire and destroyed barricades. At this point, the main building of the airport and the air control tower are both visible.

 billboard showing a 
Horizon Airlines billboard showing a jetliner

The scene zooms further out to show two dead figures in power armor sitting against a structure with a poster featuring Uncle Sam in power armor, reading, "The Brotherhood wants you." The camera pulls back onto the airport tarmac, showing various crashed or parked planes and briefly crossing over a teddy bear in the middle of the runway. Another billboard is seen, and this one is advertising Horizon Airlines with the tagline "Patriots don't spend their travel dollars abroad! Fly Horizon Airlines." The sequence cuts to black as the camera reaches a nearby highway.

The Target

Wilzig's severed head contains the blue compound Moldaver actually wants, preserved through a method requiring decapitation to retrieve.

Wilzig consents to decapitation explicitly

Head specified over whole body

Blue bead injected into neck

Unauthorized research protected at cost

Ma June confirms Moldaver as client

Wilzig's departure from the Enclave was not an escape Moldaver reacted to but an extraction she orchestrated, with Ma June's Sundries functioning as a pre-arranged waypoint in her network. The blue bead Wilzig injected into his own neck is the payload of that extraction — viable only within living tissue — which is why Moldaver ordered the head specifically and why Wilzig consented to decapitation before he ever reached Filly. Lucy is not carrying a bargaining chip but an unwitting link in a pre-engineered supply chain whose product has been incubating inside a human body since before the mission began.

Wilzig's Head Holds the Real Payload

Wilzig Was Moldaver's Operative, and His Head Is the Delivery Vessel She Commissioned

Lucy's vault-born morality will shatter against the wasteland's brutal logic, leaving her a stranger to her own principles.

Wilzig's 'different animal' warning

Radroach evolution as framing device

Lucy's failed de-escalation attempt

Tranquilizer gun ineffectiveness

Lucy's stated unwillingness to return

CX404 as transformation precedent

Wilzig's warning that Lucy will become 'a different animal' is a structural prediction about identity collapse, not a metaphor for danger: her Vault-bred values are pre-adaptation traits the surface will select against, and her arc is the gradual dissolution of the person who left Vault 33. Every tool she brings from the Vault fails on contact with the wasteland, not because she uses them wrongly but because the environment does not register them. The theory holds that when Lucy finds her father, the desires that sent her looking for him will already be gone.

Lucy's Vault Morality Will Not Survive

CX404 is a weaponized Enclave asset that Wilzig repurposed, not a rescue, making his control over it the real story.

Alphanumeric designation instead of name

Enclave military dog breeding program

Researcher killed with surgical precision

Wilzig falsifies records to preserve CX404

Parallel development with covert research

Ghoul attack mirrors co-worker killing

CX404 is a purpose-bred Enclave combat asset whose handler was switched, not a companion animal with unusual training. The Enclave's own weapons research is currently moving through the wasteland protecting the man who stole their most sensitive work, operating exactly as designed with only its loyalty redirected. Whether that lethality originates in the breeding program, in Wilzig's modifications, or in both is the unresolved question the theory inhabits.

CX404 Is an Enclave Weapons Asset

Moldaver's recognition of Lucy stems from a prior connection to Lucy's mother, making their meeting far less coincidental than it appears.

Wilzig Recognizes Lucy Immediately

Wilzig's Repeated Warnings to Lucy

Ma June's Hostile Reaction to Moldaver

Ma June's Ledger Lists Moldaver

Moldaver's Network Knows the Vault

Wilzig's unprompted recognition of Lucy by name, vault, and family detail was not observation — it was intelligence, assembled by Moldaver's network before the two ever met. The organizational infrastructure capable of building that file traces to Enclave-era research networks Wilzig himself inhabited, and the individual-level source most consistent with the evidence is Lucy's mother, already inside Moldaver's operation. Wilzig's repeated instructions to turn Lucy around are not warnings from a stranger. They are targeted instructions from someone who knows exactly where she is headed and why she must not arrive.

Moldaver Knew Lucy Before the Vault

Wilzig's Briefing Came From Moldaver's Network, and Moldaver's Network Got It From Lucy's Mother

Fallout

Vault 31 Runs Two Systems Against Vault 33: A Doctrine That Lies and a Pipeline That Enforces It

Vault-Tec Built Traps to Hunt Surface Dwellers

Barb Howard Built the Vault Hierarchy

Vault 4's Scientists Were Always Test Subjects

Charlie's Meetings Are an Anti-Vault-Tec Cell

Vault 4's Comfort Is the Cage

Barb's "Good Vaults" Secret Will Break Cooper

Vault 33 Was Never a Shelter — It Was a Laboratory With a Cover Story

Vault-Tec Wired Americans to Become Communists

The Deathclaw Was a Doctrine, and Cooper Howard Was Designed to Be Its Blind Spot

Future Enterprise Ventures Is Vault-Tec's FEV Program

Vault-Tec Chose Which Vaults Would Die of Thirst

Branded Suicide Pill Bottle

Tiered Protocol Naming Convention

Pills as Final Option for Unreachable Vaults

Ma June's Condemnation of the Vaults