Societal Conflict
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Vogan-Cyberman Cold War on Voga

The Fourth Doctor becomes entangled in the simmering conflict between Cybermen and the mineral-rich Voga, nucleated by Commander Stevenson, Harry Sullivan and Professor Kellman's investigations into Voga's defenses.

15 events across 1 season

Arc Timeline

Season 12

15 events
S12E17 · Revenge of the Cybermen Part 1
Urgent transmission exposes quarantine

Warner detects an unexpected transmission while on duty in the Nerva Beacon control room and responds by declaring the station a quarantined zone after detecting a plague infection. His attempt …

Start
Kellman plants seeds of betrayal then departs

Professor Kellman carefully crafts an atmosphere of doubt and resentment among the crew before slipping away. His pointed questions and thinly veiled criticisms undercut Commander Stevenson's authority, suggesting the mission …

Start
Doctor halts killing exposes traitor Kellman

Stevenson prepares to execute an infected crewman under Kellman’s urging, escalating the station’s panic. When the Doctor intervenes to stop the killing, Stevenson insists the plague is unstoppable and demands …

Climax
Doctor defies quarantine protocol

The Doctor challenges Stevenson’s plan to execute a plague-infected crew member, asserting medical authority over institutional panic. Stephanie and Lester defend quarantine with grim efficiency, while Kellman escalates rhetoric by …

Climax
Doctor reveals engineered Cybermen plague

The Doctor transmits his findings to Commander Stevenson via video link, exposing that the crew’s annihilation stems from an engineered pathogen rather than organic infection. By detailing the virus’s unnatural …

Climax
Harry challenges Earth's isolation mandate

Harry emerges from the horrors of diagnosing the creeping infection to confront the crew with the brutal truth of their abandonment. As Warner’s ravaged body bears witness to Earth Centre’s …

Resolution
Kellman signals Cybermen in control room

With Stevenson distracted by the Doctor’s Cyberman revelations, Kellman exploits a moment of cover to sever his own link to accountability. Quickly powering a concealed transmitter, he sends a coded …

Resolution