Fabula
Season 22 · Episode 2
S22E2
Tragic
Written by Paula Moore
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Attack of the Cybermen Part 2

The Doctor and his companions must prevent the Cybermen from using his TARDIS to travel through time and change history, while also stopping their plan to divert Halley's Comet to destroy Earth.

The Doctor and his companions, including Peri, Lytton, and Griffiths, find themselves trapped in the TARDIS, which has been taken over by the Cybermen. The Cybermen, led by the Cyber Leader and the Cyber Controller, plan to use the TARDIS to travel through time and change history, specifically to prevent Mondas, their home planet, from being destroyed. They intend to divert Halley's Comet to crash into Earth, which would have a significant impact on the planet's atmosphere and allow Mondas to survive. The Doctor and his companions must navigate through the Cybermen's base on Telos, a planet where the Cybermen have established a tomb for their hibernating kind, and stop the Cybermen's plan. Along the way, they encounter various obstacles, including rogue Cybermen, Cryons, and other challenges. The Doctor also has to confront his own misjudgment of Lytton, who is working with the Cryons to defeat the Cybermen. Ultimately, the Doctor and Peri manage to escape in the TARDIS, while Lytton sacrifices himself to help the Doctor defeat the Cyber Controller.


Events in This Episode

The narrative beats that drive the story

58
Act 1

The Doctor, Peri, Lytton, and Griffiths are prisoners within the TARDIS, which the Cybermen have commandeered. The Doctor skillfully negotiates Peri's release by threatening to destroy the TARDIS, learning in the process that the Cyber Controller resides on Telos, their adopted home planet. Upon arrival on Telos, the companions are separated; Lytton and Griffiths escape into the complex, while Peri is captured by a rogue Cyberman but swiftly rescued by the indigenous Cryons. Simultaneously, the Doctor is imprisoned in a cold storeroom, where he meets Flast, a surviving Cryon. Flast reveals the Cybermen's audacious plan: they intend to prevent the destruction of their original planet, Mondas, by diverting Halley's Comet to crash into Earth in 1986, thereby altering established history. The Doctor realizes the Time Lords have subtly maneuvered him into this conflict. Elsewhere, Lytton, having revealed his true allegiance to the Cryons, recruits Griffiths, Bates, and Stratton for a mission to steal the Cybermen's other time vessel, offering vast quantities of Telosian diamonds as payment. The Cryons, including Rost and Varne, explain to Peri that Lytton's mission is crucial to prevent the Cybermen from leaving Telos, as their departure would trigger a planetary explosion designed to study atmospheric effects.

Act 2

The Doctor, armed with knowledge of the Cybermen's plan and the unstable mineral Vastial, begins his counter-offensive. He uses a small amount of Vastial, activated by his sonic lance, to kill a Cyberman guarding his storeroom, securing his escape. Flast, the Cryon, then gives the Doctor her sonic lance and reveals enough Vastial exists to destroy Cyber Control, implying her own sacrifice in setting the larger bomb. Meanwhile, Lytton's attempt to infiltrate Cyber Control takes a grim turn when he is captured and subjected to agonizing Cyber-conversion by the Controller. Outside, Bates, Stratton, and Griffiths, attempting to reach the Cybermen's second time vessel, are ambushed and killed by Cybermen, ending their subplot. The Doctor, now free, discovers the TARDIS is guarded. He works with the Cryons to lure Cybermen out of the TARDIS using a dead Cyberman's distress signal. During the ensuing skirmish, Cryons clear the path to the TARDIS, though Varne perishes. Peri informs the Doctor of Lytton's true loyalty to the Cryons, prompting the Doctor to abandon his initial escape and resolve to rescue Lytton from Cyber Control. The Vastial bomb, set by Flast, quietly heats up in the storeroom, unknowingly ticking towards a catastrophic detonation.

Act 3

The Doctor materializes the TARDIS directly into Cyber Control, confronting the Cyber Controller and Lytton, who is halfway through his agonizing Cyber-conversion. Lytton, his mind deteriorating, begs the Doctor for a merciful death. When the Cyber Controller attempts to intervene, the Doctor subtly places a sharp instrument into Lytton's hand. Lytton, with a final act of defiance and self-sacrifice, repeatedly stabs the Cyber Controller, severing fluid tubes and creating a diversion. This allows the Doctor to seize a weapon and systematically destroy the remaining Cybermen in the room, including the Controller, whose chest plate explodes. Peri, observing the intense battle on a scanner, rushes to the Doctor's side as Lytton succumbs to his injuries, dying in the Doctor's arms. Despite the Doctor's grief and regret over his misjudgment of Lytton, Peri urges him to leave, as there is nothing more he can do. The Doctor and Peri dematerialize the TARDIS just moments before the Vastial bomb, set by Flast, detonates, obliterating Cyber Control. Safe within the TARDIS, the Doctor reflects on his profound misjudgment of Lytton, while Peri reassures him that their actions secured Earth's safety and preserved the web of time.