Fabula
S12E20 · Revenge of the Cybermen Part 4
S12E20
· Revenge of the Cybermen Part 4

Doctor confirms doomed collision with Voga

As the Doctor and Sarah brace for impact, the Doctor’s scientific confidence evaporates with the revelation of a catastrophic guidance system failure. The rocket has narrowly missed the Cybermen’s Beacon, but the Doctor’s quick analysis exposes an even more dire malfunction: locked gyro controls and jammed flight trimmers make their collision with Voga inevitable. This diagnosis strips away the temporary relief of survival, forcing a brutal confrontation with the mission’s total failure and the frantic need to rethink their strategy.

Plot Beats

The narrative micro-steps within this event

2

The Doctor and Sarah realize the rocket has missed the Beacon, but they are still on a collision course with Voga.

relief to alarm ['Nerva Beacon']

The Doctor explains the critical situation with the locked gyro controls and jammed flight trimmers, realizing they are heading for a catastrophic impact.

alarm to despair

Who Was There

Characters present in this moment

2
Sarah Jane Smith
Investigative Journalist
 primary

Panicked confusion veering into desperate focus

Ducking instinctively as the rocket clears the beacon, her relief is short-lived. She demands clarity from the Doctor with rising urgency, her voice sharp with fear and impatience as the situation's gravity sinks in.

Goals in this moment
  • • Extract clear explanation and meaning from the Doctor’s diagnosis
  • • Grasp the severity of their new peril to act accordingly
Active beliefs
  • • Trust in the Doctor must be balanced with unblinking realism
  • • Danger on alien worlds escalates unpredictably and swiftly
Character traits
Instant shift from relief to acute alarm Vocal skepticism triumphing over automatic trust in the Doctor’s assurances Physical presence accentuated by close proximity to doomed machinery
Follow Sarah Jane …'s journey
The Fourth Doctor
Science Officer
 primary

Shocked clarity masking underlying dread

Rapidly pivots from self-satisfied commentary to horrified realization, his body stiffening as he identifies the fatal flight system failure. He barks out terse diagnosis while Sarah’s mounting alarm registers on her face nearby.

Goals in this moment
  • • Identify and articulate the cause of the rocket's failure to Sarah and himself
  • • Reassess and redefine the immediate danger despite the avoidance of the beacon
Active beliefs
  • • Technology is ultimately predictable if systematically analyzed
  • • Preparation and knowledge can overcome seemingly insurmountable odds
Character traits
Scientific precision under pressure Dry wit abandoning him mid-line Agile mental and physical adjustment to disaster
Follow The Fourth …'s journey

Objects Involved

Significant items in this scene

2
The Cybermen Guidance Beacon

The Cybermen Guidance Beacon temporarily ceases to be the immediate hazard when the rocket swerves past it. Its metallic presence becomes a silent witness to the Doctor’s horrified discovery: it was engineered to permit this near miss, only to redirect the rocket toward Voga through its kill-switch mechanisms.

Before: A compact, active threat device aboard the rocket …
After: Functionally disabled as a direct weapon but having …
Before: A compact, active threat device aboard the rocket with its gyro and flight systems locked and trimmers jammed by Cybermen sabotage
After: Functionally disabled as a direct weapon but having successfully altered the rocket’s course to fulfill its intended function
Vogan Rocket Guidance System

The Vogan Rocket Flight System’s controls are the focus of the Doctor’s diagnosis as he identifies locked gyros and jammed flight trimmers. The metallic console’s smooth surface reflects their dim surroundings, displaying a red countdown that mocks their inability to alter course or command the vessel.

Before: Functioning with apparent stability but carrying hidden mechanical …
After: Mechanically compromised beyond repair, locked into a collision …
Before: Functioning with apparent stability but carrying hidden mechanical failure induced by Cyberman sabotage
After: Mechanically compromised beyond repair, locked into a collision trajectory despite active attempts to regain control

Location Details

Places and their significance in this event

1
Nerva Beacon Secondary Control Room

The Nerva Beacon Secondary Control Room serves as a claustrophobic arena for the realization of failure. Console banks pulse with amber alerts and the low hum of machinery at full capacity, while the viewport frames the inevitability of disaster outside—Voga’s golden disk hangs ominously against the void.

Atmosphere Tense and sterile with the cold precision of pending doom
Function Command nexus where time-critical decisions and diagnostics are performed under extreme pressure
Symbolism Represents humanity’s fragile foothold in a hostile universe where control can vanish in an instant
Access High-security operational hub restricted to authorized personnel only during active crisis
Cold tactical displays casting blue and amber glow across metallic surfaces Emergency lighting deepening shadows in corners like unspoken doubts

Narrative Connections

How this event relates to others in the story

What led here 1
Causal

"Stevenson's successful redirection of the rocket to hit the Cybermen's ship causes the Cybermen to panic and ultimately abandon their plan to destroy Voga, leading to their defeat."

Doctor races to halt Voga’s destruction
S12E20 · Revenge of the Cybermen Part …

Part of Larger Arcs

The Fourth Doctor's desperate battle to outmaneuver the Cybermen and prevent the destruction of Voga, involving moral dilemmas, tactical sacrifices, and last-minute reversals against overwhelming odds.

Key Dialogue

"DOCTOR: Oh, yes. Oh no. They've locked the gyro controls. The flight trimmers are jammed."
"SARAH: What does that mean?"
"DOCTOR: It means we're heading for the biggest bang in history."