Societal Conflict
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Harrison Chase's Earth Domination

A persistent conflict where Harrison Chase, informed by Felix Keeler and Scorby, seeks to control Earth's ecosystems and eliminate human interference, leading to direct confrontations with the Doctor and UNIT.

61 events across 1 season

Arc Timeline

Season 13

61 events
S13E21 · The Seeds of Doom Part 1
Scientists debate mysterious living pod

The Antarctic research team carefully extracts a frozen object from the ice, initially dismissing it as inert until Stevenson touches its surface and senses an unnatural vitality. Despite Winlett’s skepticism …

Start
Dunbar trades secrets for Antarctic expedition

Dunbar arrives at Chase’s mansion with a stolen secret—photographs of an ancient, potentially extraterrestrial plant pod recently unearthed in Antarctica. Presenting it as a rare scientific specimen with global significance, …

Start
Dunbar decides to call UNIT

With the Antarctic pod’s infection rapidly consuming Winlett and Thackeray’s telex confirming the crisis has overwhelmed local resources, Dunbar grasps for an institutional solution. His insistence on involving UNIT introduces …

Climax
Winlett's body mutates beyond death

As the research team grapples with mounting casualties from the mysterious pod infection, Moberley receives devastating news over the radio: the medical evacuation has failed, with White-out conditions grounding rescue …

Climax
Chase operatives infiltrate Antarctic station

Scorby and Keeler arrive under false pretenses as stranded pilots, forcing their way into the living quarters to assess the crisis firsthand. Their calm demeanor masks ruthless efficiency as they …

Climax
Winlett’s final transformation horrifies team

Winlett’s body is consumed by alien tendrils in sickbay while the Doctor and Sarah debate drastic measures. Moberley faces the impossible choice of amputation, knowing victory against the contagion is …

Resolution
S13E22 · The Seeds of Doom Part 2
Winlett abandons Moberley in the blizzard

With the pod’s containment failing and the passageway collapsing into chaos, Winlett makes a lethal choice. Disregarding their partnership with Moberley, Winlett steps over the injured man and vanishes into …

Start
Scorby reveals murder plan and breaks Keeler

Scorby seizes control by confiscating the rifle from its hiding place, immediately dismantling it as a symbolic and literal threat. When Keeler questions his motives, Scorby escalates from paranoia to …

Start
Sarah discovers Moberley dead in research lab

Sarah arrives at the research lab to assist with retrieving the dangerous plant pod when she unexpectedly encounters Moberley’s corpse. His sudden death exposes a severe security breach and complicate …

Start
Doctor inspects generator alone

From a high ridge over the Antarctic wastes, the Doctor studies the distant generator plant where an alien Krynoid has taken root. Stevenson explains the facility’s new fuel cell system …

Start
Doctor exposes Winletts Krynoid transformation

Stevenson returns from searching for Winlett but finds only vague excuses about collapse. The Doctor strips away the diplomatic language and delivers the brutal truth that Winlett no longer exists …

Climax
Krynoid breaches the Generator plant

Scorby’s discovery of Moberley’s corpse in sickbay immediately precedes the Krynoid’s violent emergence, confirming the alien threat’s proximity. His cold acknowledgment of the mark on Moberley’s body reflects his dismissal …

Climax
Scorby forces Keeler into compliance with bomb threat

Scorby reveals his hidden bomb rigged to destroy the camp if flaws are triggered, turning his plan from removal of evidence to mass murder. When Keeler resists, Scorby restrains him …

Climax
Krynoid bursts as Scorby escapes

The alien Krynoid erupts through the lab’s main entrance with violent speed, forcing Stevenson into immediate combat. As chaos engulfs the room, the Doctor spots Scorby’s plane lifting off, a …

Resolution
S13E23 · The Seeds of Doom Part 3
Chase views alien pod for the first time

In the sterile confines of the Antarctic plant lab, Harrison Chase steps into the adjacent greenhouse chamber where Scorby carefully unlocks a mysterious alien pod. Chase’s rare sense of childlike …

Start
Dunbar warns Chase of Doctor’s survival

Dunbar arrives at Chase’s plant lab to inspect the alien pod, only to find the ruthless industrialist celebrating its acquisition. Their tense exchange quickly shifts when Dunbar reveals the unexpected …

Climax
Dunbar betrays his allies to Chase

Dunbar, alone in his office, makes a secret call to Harrison Chase to confirm that the Doctor and Sarah are being neutralized. He then warns Chase about the pod’s discovery, …

Start
Trapped and ambushed in Antarctic limousine

The Doctor and Sarah are lured into a deserted quarry lane by their chauffeur, who reveals himself as an armed assailant under Chase's command. Forced from the limousine at gunpoint, …

Start
Disguised infiltration of Chase's mansion

With the chauffeur's uniform in hand and a plan to avoid detection, the Doctor and Sarah approach Chase's mansion posing as staff. The Doctor's bold improvisation buys them entry through …

Start
Chase forces armed showdown in library

Cornered by Scorby’s gunmen in the Antarctic library, the Doctor and Sarah face immediate execution. Chase’s cold celebration over their capture reveals his fanatical devotion to forcing the alien pod …

Climax
Keeler discovers the living pod

Keeler examines the alien pod through a magnifying lens and notices abnormal biological growth on its surface. Realizing the perilous danger, he abandons scientific detachment and urgently orders Hargreaves to …

Start
Chase enforces death sentence with twisted requiem

Chase offers the Doctor and Sarah a lethal preview of his devotion to the alien pod by forcing them to endure his self-composed Floriana Requiem. As the oppressive botanical music …

Climax
Hargreaves interrupts execution with urgent news

Hargreaves bursts into the greenhouse with dire news about the pod’s rapid growth in the annex, forcing Chase to suspend the preordained execution of the Doctor and Sarah. The moment …

Resolution
Chase forces nitrogen injection into pod

Against Keeler’s explicit warnings, Chase overrides all safety protocols to order a nitrogen injection into the sealed pod. His obsession with unlocking the alien artifact’s secrets overrides caution and ethical …

Resolution
Pod transformation shocks Keeler into silence

In Keeler’s isolated lab, the pod’s expansion reveals grotesque vitality through widening seams and shifting angles. Keeler cowers in terror as the pod’s accelerating transformation horrifies him, its very form …

Resolution
Guards seize Sarah during escape attempt

Sarah and the Doctor separate to evade capture, but her attempt to flee across the mansion grounds ends abruptly. A guard ambushes her from behind, weapon drawn, his threat underscoring …

Climax
S13E24 · The Seeds of Doom Part 4
Doctor and Sarah break free from Chase's lab

In a frantic escape, the Doctor leaps through the skylight into Keeler's lab and immediately incapacitates Scorby with brutal efficiency. Grabbing Sarah, he seizes control of a gun and disarms …

Start
Chase denies help to mutating Keeler

Chase observes Keeler’s grotesque transformation into a plant-like organism with clinical detachment, dismissing urgent pleas for medical intervention with cold rationality. As Keeler’s skin turns green and his limbs spasm …

Start
Hargreaves warns Chase about Doctor's danger

Hargreaves expresses grave misgivings to Chase outside the cottage as they oversee the Doctor’s containment in the pod. His warning about the potential danger posed by the prisoner goes unheeded …

Climax
Scorby delivers The Doctor’s capture while Ducat’s call disrupts plans

Chase’s estate teeters on chaos as Scorby triumphantly reports The Doctor has been captured and locked in the compost room, while Hargreaves interrupts with a frantic call from Amelia Ducat …

Climax
Watchman reveals Ducat’s debt ultimatum

Miss Ducat’s sudden demand to see Sir Colin Thackeray for an unpaid debt intrudes on the gatehouse standoff. The Watchman’s report carries a personal threat wrapped in a debt collection—one …

Resolution
Chase terminates pursuit with brutal dismissal

Chase ends all distractions in the Plant Lab with cold finality, declaring his workspace a no-interruption zone to assert unchallenged control. His ruthless dismissal of an unseen presence—likely Sarah or …

Climax
Sarah faces Kay's worsening transformation

Sarah infiltrates the cottage's upper floor seeking the Doctor, only to confront the horrific truth of Keeler's Krynoid infection. His grotesque fusion with plant matter leaves him increasingly unstable, alternately …

Climax
Dunbar confronts Chase over Krynoid danger

Dunbar enters Chase's library to issue a final warning about the Krynoid experiment, but the scientist dismisses ethical boundaries and vows to continue. Hargreaves interrupts with frantic reports that the …

Resolution
S13E25 · The Seeds of Doom Part 5
Reloading under fire turns desperation to strategy

Scorby and his guards arrive firing wildly, forcing the Krynoid to abandon its pursuit of the Doctor and Sarah. What begins as reckless gunfire quickly shifts under the Doctor’s command …

Start
Scorby and the Doctor barricade the cottage

With the Krynoid’s relentless growth outside turning the surrounding vegetation hostile, the Doctor and Scorby rush to secure the cottage as their last sanctuary. The heavy settee scrapes against the …

Start
Scorby receives Chase’s chilling ultimatum

With the cottage barricaded against the encroaching Krynoid, Scorby’s walkie-talkie bleeps to life as Chase demands answers about the disturbance. Chase’s intrusion forces Scorby to report the dire reality of …

Climax
Scorby learns the truth about Krynoid

The Doctor and Sarah must break the horrifying truth to Scorby as the cottage comes under siege. Trapped by an advancing alien plant that was once his friend Keeler, Scorby …

Resolution
Chase forbids harming the Krynoid

As the Krynoid’s encroaching tendrils fracture the Plant Lab’s walls, Chase seizes command with desperate authority. Amidst the rising panic of his guards and subordinates, he singles out Scorby and …

Start
Scorby warns Chase of the Krynoid danger

With the cottage walls shaking under the relentless advance of the alien Krynoid, Scorby races to warn Chase of its rapidly growing presence and lethal capabilities. He recounts the gruesome …

Start
Failed diplomacy sparks violent reprisal

Scorby seizes the Doctor’s walkie-talkie, attempting one last appeal to Chase, but the broken transmission dies as the Krynoid’s sentience asserts itself. A crushing tentacle breaches the cottage, shattering the …

Climax
Scorby and Sarah lock horns in greenhouse crisis

The greenhouse lab hovers at the edge of collapse under the Krynoid’s growing menace. Scorby assumes command, issuing orders to fortify the building while dismissing any hope of escape—enraged that …

Climax
Scientist dead in chokehold of vine

The vines have turned deadly. Sarah and Scorby discover a scientist strangled in the gardens, his body gripped by alien vegetation. The sight confirms the Krynoid’s escalation from encroaching menace …

Resolution
Chase abandons humanity for Krynoid

Sarah and Scorby discover a corpse strangled by the Krynoid’s vines, confirming the plant’s deadly expansion. Chase appears indifferent, captured by his obsession with the creature’s twisted vision. As he …

Resolution
Greenhouse falls under Krynoid's suffocating grip

Sarah, Scorby, and Hargreaves confront Chase as his cultivated plants turn violently against them, smothering their escape route. Chase’s ideological extremism erupts into full manic prophecy, declaring war on all …

Climax
Hargreaves sacrifices himself in Krynoid retreat

As the Doctor and Henderson breach the greenhouse with defoliant in hand, Chase emerges in his corrupted state and attempts to stop their assault, revealing the depth of the Krynoid’s …

Resolution
S13E26 · The Seeds of Doom Part 6
Light erupts from Krynoid head

The Doctor and his companions watch in mounting horror as the Krynoid’s head tears open to release a blinding shaft of coherent light. The alien’s sudden aggressive display signals a …

Start
Beresford orders desperate laser strike

Major Beresford directs his team to unleash another concentrated laser barrage at the advancing Krynoid biomass. The strike erupts across the grounds as the alien surges closer to the research …

Start
Team flees as lasers briefly stall Krynoid

The Doctor shouts for the others to use a rear exit as the Krynoid advances, guiding them past the alien’s blind spot. Major Beresford orders a laser barrage directly into …

Start
Doctor identifies Chase's Krynoid infection

The Doctor narrows his suspicion to Chase while plants press against the connecting door. Questioning Henderson about Chase's unexplained return from the Krynoid's proximity, the Doctor voices his suspicion that …

Start
Chase destroys the lab music system

Chase's simmering panic erupts into outright sabotage as he views the defoliant tanks and the facility's sterile order. He targets the music system with violent precision, its destruction a visceral …

Climax
Scorby flees to a fatal end

Scorby dismisses the Doctor's warnings and makes a desperate solo escape through a small door just as the Krynoid's forces breach the facility. His reckless departure into the surrounding vegetation …

Start
Chase betrays Henderson in smokehouse

The Krynoid’s relentless advance forces Henderson to aid the Doctor, unaware that Chase has already been fully consumed by the alien organism. While the Doctor and Scorby argue over desperate …

Resolution
Doctor battles Chase to save Sarah

The Doctor races against time to stop Chase from feeding Henderson into the compost machine while the Krynoid's relentless advance shakes the facility. Scorby's cowardice leads him to flee into …

Climax
Sarah faces Chase’s Krynoid conversion

Trapped in the facility’s compost room as the Krynoid’s creeping dominion takes hold, Sarah confronts Chase’s transformation into a fanatical apostle of the alien’s nihilism. His calm, chilling devotion to …

Climax
Beresford makes last stand radio call

Major Beresford retreats to a failing radio station in the facility’s outer wing as the Krynoid’s tendrils overwhelm the corridors outside. The static-choked signal bars fade with every second, but …

Resolution
Doctor shifts Beresford to desperate new plan

With laser attacks failing to slow the Krynoid’s advance, the Doctor seizes direct communication with Major Beresford to force a radical rethink. He delivers a stark timeline before the organism …

Climax
Doctor fails to save infected Chase from compost machine

Chase, infected by the Krynoid and its zeitgeist of dominion, attempts to sacrifice Sarah Jane to the compost machine as part of his twisted devotion. The Doctor intervenes just as …

Resolution
RAF bombardment destroys Krynoid and facility

As the Krynoid’s creeping vines overtake the research grounds, the Doctor and Sarah scramble to shelter behind a fallen tree. The RAF’s aerial assault begins, their bombs reducing the historic …

Climax
Doctor deflects Thackeray with wit

As the Krynoid’s expansion threatens the facility, Thackeray seeks the Doctor’s expertise to avert catastrophe. Instead of urgency, the Doctor parries with absurd humor and empty pleasantries, masking the crisis …

Resolution
Doctor's flippant holiday proposal

The Doctor attempts to flee the escalating Krynoid threat by materializing the TARDIS to Cassiopeia, a casual remark masking his deeper unease. His distraction with banter and ill-timed jokes betrays …

Resolution