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The Sixth Doctor and Evelyn gate crash an interstellar time/space conference and run into Vansell of the Gallifreyan C.I.A., who still doesn't get along with anyone. They discovered that a planet has been missing for twenty years. It happened to house a space/time MacGuffin bomb and, rather surprisingly, Lady President Romana of Gallifrey, who was abducted just weeks into her presidency.

The Daleks turn out to be behind the planetary kidnapping, and they've kept Romana as a slave for twenty years. She's rather broken, but bounces back as best as she can after the Doctor rescues her. The Daleks announce that they plan to destroy all of time and space using the MacGuffin bomb, and they need Gallifreyan technology to keep themselves JustOneSecondOutOfSync from the explosion. The Doctor, Romana, Evelyn and Vansell team up to stop them.

Part two of four of the ''Dalek Empire'' series, followed (from the Daleks' perspective) by "[[Recap/BigFinishDoctorWho015TheMutantPhase The Mutant Phase]]".

!!The Tropocalypse Element:
* AllYourBaseAreBelongToUs: The Daleks are good at this.
* ApocalypseHow: The Daleks set a new personal record with a [[ApocalypseHow/ClassX3 Class X3]], destroying an ''entire galaxy'' with the titular element.
* ArtificialGravity: The [[MeaningfulName Gravity Wells]].
* TheBadGuyWins: The Daleks get exactly what they were ''really'' after - they destroy-and-recreate the Seriphia Galaxy in a time bubble, leaving them with an entire galaxy empty of life in which to create "a million Skaros!", letting them launch attacks on the rest of the universe.
* BatmanGambit: The Daleks are good at this as well.
* [[SesquipedalianLoquaciousness Big Words]]: Gets a LaymansTerms.
* BodyDouble: The Daleks are [[Recap/DoctorWhoS2E8TheChase once again]] using their tried-and-trusted Dalek puppets.
* BorrowedBiometricBypass: The Daleks make their way through the capitol using the eyes of dead guards to bypass the retinal security locks.
* BorrowedCatchphrase: The Daleks having a limited vocabulary, this extends to those under their control.
* BreakTheCutie: Romana's been a Dalek slave for twenty years. She's... not quite her old self. Not yet anyway.
* TheBusCameBack: [[FanService Romana appears for a Sixth Doctor adventure!]]
* CallForward: Another (unintentional) one to [[Recap/DoctorWhoS30E12TheStolenEarth "The Stolen Earth"]] - yet again, the Daleks are stealing planets for nefarious purposes. They also keep saying that "Gallifrey must fall!" - they eventually find out [[Recap/DoctorWho50thASTheDayOfTheDoctor Gallifrey Stands]].
** The Doctor counters the aforementioned BorrowedBiometricBypass by replacing the Eye of Harmony’s recognition system from Time Lord to human. [[Recap/DoctorWhoTVMTheTVMovie That comes back to bite him 700 years later]].
* CatchphraseInterruptus: The Doctor gets sick and tired of the Daleks' threats very quickly.
* ColourCodedForYourConvenience: The Daleks are lead by a Black Dalek.
* CombatTentacles: The uncased Dalek mutants.
* CoveredInSlime: What it does to the Doctor.
* EyeScream: The doors in the Gallifreyan Capitol are opened via retina scan of a Gallifreyan's eye. The Daleks exploit the fact that the eye doesn't need to be attached to a living Gallifreyan at the time.
* {{Foreshadowing}}: Unintentionally to the [[GreatOffscreenWar Time War]]. Creator/RussellTDavies, and later ''Literature/ABriefHistoryOfTimeLords'' would mention the "Etra Prime Incident" as one of the events that led to the Time War.
* GhostTown[=/=]GhostPlanet: Using technology [[spoiler: The Doctor]] locks all of the inhabitants of the Gallifreyan Capitol inside, saving most of them from the Daleks.
* GoMadFromTheRevelation: Averted. Romana syncs into the gestalt consciousness, glimpses Dalek minds and the consciousness of space and gravity itself, and gets a bit more broken than she already was -- but doesn't go mad. Then she does it ''again'' and still manages to retain her sanity.
* GondorCallsForAid
* HaveWeMetYet: Romana notes that the Doctor is doing their timelines entirely out of order, and that he's in "the wrong body"[[note]]Most likely because for Romana, this happens after she met the Eighth Doctor in "Shada"[[/note]].
* HolographicDisguise: See below.
* TheHighQueen: As soon as Romana is back on Gallifrey, she picks up the role quickly.
* ISurrenderSuckers: By proxy.
* LargeHam: The Doctor is confronted with the end of the universe.. And doesn't handle it well.
* LaymansTerms: "Maritime vessel initiating materialization sequence." "If that means we're landing, just say it."
* MassTeleportation: To an ''entire planet''.
* MentalFusion: A Time Lord trick.
* MindControl: A Dalek trick.
* MineralMacguffin: The crystals of Archetryx prime.
* MoreHeroThanThou: [[spoiler: Varner]].
* NoIndoorVoice: The Daleks are even more shouty.
* ObstructiveBureaucrat: The Doctor feels that Vansell is one of these.
* OmnicidalManiac: The Daleks.
* TheParalyzer: Dalek weaponry works like this if they want it to.
* PeaceConference: The setting.
* PoorlyDisguisedPilot: Serves as one for:
** ''AudioPlay/{{Gallifrey}}'', setting up Romana as Lady President and providing the impetus for the creation of the Temporal Powers alliance with the Monan Host and others.
** ''AudioPlay/DalekEmpire'', setting up the ongoing Dalek attack from the Seriphia Galaxy.
* {{Pun}}: "Put's a whole new spin on the term ID, doesn't it?"
* RoboSpeak: The Daleks, natch.
* SpaceStation
* SpaceX: See TwoOfYourEarthMinutes.
* SpannerInTheWorks: The Daleks recognize the Doctor is this very much so.
* StormingTheCastle: Well, storming Gallifrey.
* {{Teleportation}}: The Whoniverse Transmat system returns.
* TitleDrop: The contents of the crystals...
* TheWatcher: The Doctor ''claims'' this is what the Time Lords "should" be.
* WhamEpisode: For Creator/BigFinish - this was their first episode with such a large scope, and launched two different spinoffs - and indeed for the greater ''Doctor Who'' story. The Daleks make one of the first great strikes of the Time War, gaining a whole galaxy for themselves, and a spearhead force ''invades Gallifrey itself''. They also cause the first coalition of Temporal Powers, who will also play a role in the Last Great Time War.
* TwoOfYourEarthMinutes: [[InvertedTrope Inverted]]. ''Evelyn'' asks if time is measured in [[SpaceX Space Minutes]] or Earth Minutes.
* YouAreNumberSix: Unit 117? You are Unit 117?
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