Societal Conflict
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The Nimon's exploitation of Aneth

The Nimon manipulates and enslaves the population of Aneth, draining their energy to sustain itself while deceiving the planet's leader, Soldeed, into serving as its instrument. Romana, the Fourth Doctor, and later Seth of Aneth oppose this foreign domination.

19 events across 1 season

Arc Timeline

Season 17

19 events
S17E20 · The Horns of Nimon Part 4
Romana flees Nimons through silver tunnels

Fresh from the space capsule, Romana stumbles into the desolate Crinoth Transmat Area, her immediate call for the Doctor echoing through cavernous silver tunnels. The arrival is not lost on …

Start
Sezom falls dying after saving Romana

Sezom collapses after dragging Romana to safety from the Nimons, his body failing from years of self-imposed starvation and guilt. As Romana tends to him, he confesses his complicity in …

Climax
Sorak reactivates and tests K9

Sorak explores the hidden capabilities of K9 after reactivating the robot, probing its advanced diagnostics with growing intrigue. The alien’s mechanical nature contrasts with Sorak’s alien biology, hinting at undetected …

Start
Doctor exposes Nimon deception twice

The Doctor successfully retrieves a transmat capsule intended for Romana, anticipating her safe return. However, optimism turns to alarm as he opens the container to reveal not his companion but …

Start
Nimons assert hostile presence on Crinoth

The two parasitic Nimons materialize in the transmat chamber of Crinoth, their first words marking the planet as a target with clinical precision. One Nimon remains at the capsule to …

Start
Sorak trapped behind sealed doors

Sorak reactivates K9 in Soldeed’s laboratory, drawn by curiosity and duty, only to watch the mechanical dog stride purposefully toward the exit before the doors automatically shut behind K9 and …

Climax
Nimons activate doomsday gambit

Romana and Sezom discover the Nimons’ final desperate plan to convert Crinoth’s mass into energy via a self-sustaining chain reaction that would destroy the planet and threaten the universe. The …

Climax
Doctor defies Nimon interrogation

The Doctor stumbles into the Nimon laboratory on Crinoth only to find himself cornered by the parasitic aliens. As he dares to interrupt their work, the Nimon commander orders his …

Climax
Seth joins Romana to strike against Nimons

Romana arrives in the laboratory just as the Nimons corner the Doctor, their parasitic hold tightening. With Seth disarmed and desperate after losing Teka, Romana tosses him the Jasonite—her first …

Resolution
Doctor locks portal as planet teeters

Soldeed’s collaboration with the Nimons is revealed in its full destructive scale as the Doctor and his companions scramble to reverse the hijacked space-time tunnel. Romana arrives only to be …

Resolution
Final moments before Crinoth's destruction

Romana and the Doctor realize the Skonnos complex is about to collapse under the stress of the Nimon-triggered chain reaction and shout warnings to evacuate. Seth confirms Soldeed's death and …

Resolution
Romana witnesses Crinoths demise

Romana’s scanner reveals Crinoth succumbing to an overwhelming explosion as the Nimons’ reign collapses. The Doctor confirms the direct threat is neutralized though its cosmic repercussions linger. Romana and the …

Resolution