S11E13
Cautionary
Written by Terry Nation
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Death to the Daleks Part 3

The Doctor and Sarah must escape Daleks and help Exxilons defeat a powerful city that has taken over their planet, threatening the Earth mission ship and millions of lives.

The Doctor and Sarah find themselves on a planet controlled by Daleks, who are oppressing the native Exxilon population. The Doctor encounters a metal snake-like creature while Exxilons, led by Bellal, try to survive in secret. As Daleks hunt them, the group discovers that the city, built by Exxilons, has become a living entity that seeks to destroy them. The Doctor and Bellal navigate through tunnels and try to disable the city's power source, a beacon on its summit. Meanwhile, Daleks enforce their control, forcing Exxilons to work in mines. The Doctor and Sarah aim to help the Exxilons defeat the city and prevent Daleks from destroying an Earth mission ship. They face various challenges, including Dalek patrols and a logic test to access the city. The Doctor's plan involves restoring power to their spaceship and aiding the Earth ship. Ultimately, they strive to outsmart Daleks and the sentient city to save the Exxilons and Earth's mission.


Events in This Episode

The narrative beats that drive the story

17
Act 1

The Doctor faces an immediate threat from a metal snake-like creature in the tunnels, narrowly avoiding its energy attacks. Concurrently, Sarah encounters Bellal, an Exxilon who introduces himself as an ally, revealing his faction's opposition to the city-worshipping Exxilons and their goal of saving their race from extinction. Daleks quickly arrive on the scene, forcing Sarah, Bellal, and another Exxilon named Gotal into hiding. A Dalek pursues the Doctor, who demonstrates his ingenuity by maneuvering the metal snake into attacking and destroying the Dalek. Sarah, concerned for the Doctor's safety, rushes to him, learning that the snake is an underground support system for the city. Bellal warns of the second Dalek's approach, prompting the group to make a swift escape through a narrow crevice in the rock wall. They successfully evade the Dalek, which fires indiscriminately into the empty chamber before departing. This initial sequence establishes the perilous environment, introduces a crucial indigenous ally, showcases the Doctor's resourcefulness in a crisis, and solidifies a temporary alliance against the dual threats of the sentient city and the Daleks.

Act 2

Having found temporary safety, the Doctor outlines his immediate objectives: restore power to their spaceship and assist the Earth mission ship. Sarah expresses skepticism about the Earth crew's apparent cooperation with the Daleks, but the Doctor warns that the Daleks will eliminate them once they are no longer useful. Bellal confirms his people are monitoring the situation. In the parrinium mine, Galloway struggles to meet the Daleks' escalating demands for more Exxilon workers, facing threats of extermination for non-compliance. A gold-colored Dalek asserts total control over the planet. Bellal provides crucial exposition, explaining that the ancient Exxilons built the city as a living, self-sustaining entity with its own brain, which subsequently turned on its creators, driving them out. His faction aims to destroy it, unlike the other Exxilons who worship it. The Doctor recognizes symbols on the tunnel walls, connecting them to ancient Earth structures, and deduces that the Exxilons visited Earth long ago. He theorizes the city drains electrical energy from the atmosphere via a beacon, explaining the TARDIS's power loss. Another metal snake attack in the mine kills an Exxilon and a Dalek, highlighting the city's aggressive defenses. The Daleks finalize plans to place explosives on the city's beacon while a patrol investigates its scientific installations. The Doctor separates from Sarah, entrusting her with the vital mission of ensuring Galloway and his crew prepare the Earth ship for immediate departure once power is restored, anticipating a Dalek attack and emphasizing the mission's importance for millions of lives.

Act 3

The Doctor and Bellal arrive at the city, a formidable, gleaming structure that Bellal perceives as evil. The Doctor observes its touch-sensitized surface and finds symbols reminiscent of ancient Earth structures he has seen. He identifies a non-conforming symbol, which he believes is the key to entry. The arrival of two Daleks forces them to hide. The Doctor quickly traces the unique symbol, causing a section of the wall to slide open, granting them access to the city's interior. Inside, they discover desiccated Exxilon remains, evidence of previous failures to navigate the city's defenses. The Doctor deduces the city presents intelligence tests, and he locates a wall panel displaying a complex maze. He explains this maze functions as a test of skill and logic, with failure leading to their demise. As the Doctor begins tracing the correct path with his finger, the Daleks outside use their computer eye to analyze the symbols, also attempting to identify the non-conforming key. The Doctor successfully navigates the maze, and the wall slides open, revealing a deeper corridor. They proceed further into the city, just as the Daleks enter, now tasked with locating the next access point, setting up a direct race against time within the city's intelligent and dangerous interior.