History Recap / StarTrekDiscoveryS3E13ThatHopeIsYouPartTwo

* HaveYouTriedRebooting: Both Tilly and Burnham believe that shutting down and restarting the ship's data core will purge the Emerald Chain's operating system and give them back control, similar to how Georgi purged an alien program from the computer core in "[[Recap/StarTrekTheNextGenerationS2E11Contagion Contagion]]" by restoring everything from a protected backup. Burnham manages to reset the computer, but points out that everything has been restored to 23rd century specs.

* HaveYouTriedRebooting: Both Tilly and Burnham believe that shutting down and restarting the ship's data core will purge the Emerald Chain's operating system and give them back control. Burnham manages to reset the computer, but points out that everything has been restored to 23rd century specs.

* ChekhovsSkill: Book's empathic powers allow him to serve as a natural spore drive interface, since he can communicate with the spores without needing tardigrade DNA as a bridge.

* BerserkButton: Zareh threatens Book by asking who would splatter more: him or “his fat cat”. This is enough to get Book to kick Zareh out of the turbolift and to his death, Book growling “She... is a ''queen''!”

** Aditya Sahil returns from all the way in the first episode of the season, now an official member of Starfleet.

** The presidents of Trill and Ni'Var have non-speaking appearances at the end of the episode.

* TheCavalry: Ni'Var sends a fleet to help engage the ''Viridian'', responding to Burnham's distress call in the previous episode.

* PublicSecretMessage: Burnham makes an oblique reference to fireworks on a shipwide channel, which Tilly recognizes as an event that happened on her birthday the previous year. Tilly deduces that Burnham is telling her to disrupt one of the nacelles to knock ''Discovery'' out of warp.

* AlmostOutOfOxygen: Osyraa vents the oxygen on Deck Seven to suffocate the bridge crew, sealing the exits so they can't flee to another deck. It takes a while, but Burnham manages to reboot the computer core and restore life support just before it becomes lethal.

* RealityEnsues: The lack of life support does not instantly kill the bridge crew -- nor should it, since whatever oxygen was already in the atmosphere is ''still there''. This is not only more realistic than previous ''Trek'' depictions of the situation, it is effectively PlayedForDrama.

* TheReveal: The incident that triggered the Burn was Su'Kal witnessing the death of his mother. She designed the holoprogram so it would hide the failing health of her and her crew, but Su'Kal disabled it and saw the truth.

* MikeNelsonDestroyerOfWorlds: Su'Kal caused the burn by witnessing his mother's death as a child, and screaming in horror. He didn't intend for it to happen (and, being a child from an isolated environment, didn't know enough to know that it even ''could'' happen), but his nature as a dilithium radiation-enhanced mutant caused him to become an UnwittingInstigatorOfDoom.

* MikeNelsonDestroyerOfWorlds: Su'Kal caused the burn by witnessing his mother's death as a child, and screaming in horror. He didn't intend for it to happen, but his nature as a dilithium radiation-enhanced mutant caused him to become an UnwittingInstigatorOfDoom.

* MikeNelsonDestroyerOfWorlds: Su'Kal caused the burn by witnessing his mother's death as a child, and screaming in horror. He didn't intend for it to happen, but his nature as a dilithium radiation-enhanced mutant caused him to become an UnwittingInstogatorOfDoom.

* SignificantWardrobeShift:
** ''Discovery'' switches to current Federation uniforms at the end of the episode, since the Burn has been solved and Starfleet is once again becoming what it used to be. As opposed to being blue with metallic piping to indicate division, these new uniforms are grey with a wide colored division panel down the side of the jacket.

** Burnham herself becomes one of the few characters in the franchise to switch division colors, after ''[[Series/StarTrekTheNextGeneration TNG]]'''s Geordi La Forge (red in the first season, yellow in the rest) and Worf (red in the first season, yellow in the rest, back to red once he joined ''[[Series/StarTrekDeepSpaceNine DS9]]''). Burnham goes from Sciences blue to Command red, signifying her new position as TheCaptain.

* SuicideMission: The plan to disable the nacelles has to be done manually because the superconductors keeping the nacelles attached will prevent any remote detonate. Given that or suffocating, the bridge crew decides to go for it. Ultimately, Owo ends up going alone because only she can keep going under the strain of oxygen deprivation. Fortunately, the Sphere data shows up in a DOT-23 to drag her to safety.

''(Season Finale)'' As the Emerald Chain tightens its grip and the mystery of the Burn is finally solved, Burnham and the crew have one last chance to save themselves -- and the Federation.

* ImprovisedWeapon: Osyraa orders the ''Viridian'' to deploy its supply of pesticide, which she plans to detonate with a torpedo, sending contaminated debris into all the nearby ships. Burnham convinces Admiral Vance to let them go so Ni'Var's fleet won't be destroyed by the attack.

** Cmdr. Jet Reno (Creator/TigNotaro) has a two-scene cameo, the first helping Owosekun restore a damaged DOT-23, the second while the entire crew assembles on the bridge. She has no lines.

* TheBusCameBack: Sahil returns from all the way in the first episode of the season, now an official member of Starfleet.

* MegaMawManeuver: Osyraa has the ''Viridian'' pull ''Discovery'' into its shuttlebay when the nacelle is disabled. Burnham takes the opportunity to drop ''Discovery's'' warp core in the middle of the ship while using the spore drive to jump out.

* SignificantWardrobeShift: ''Discovery'' switches to current Federation uniforms at the end of the episode, since the Burn has been solved and Starfleet is once again becoming what it used to be.

* TheBusCameBack: Sahil returns from all the way in the first episode, now an official member of Starfleet.

->"In a very real sense, we are all aliens on a strange planet. We spend most of our lives reaching out and trying to communicate. If during our whole lifetime, we could reach out and really communicate with just two people, we are indeed very fortunate."

* ThisIsSomethingHeHasToDoHimself: Saru tells Su'Kal that he has to complete his final test, but will be there to support him.

''(Season Finale)'' As the Emerald Chain tightens its grip and the mystery of the Burn is finally solved, Burnham and the crew have one last chance to save themselves – and the Federation.

* ExploitedImmunity: Culber has found a breach in the holo-wall, but the radiation is stronger beyond it and he can't pass through without getting sick much quicker. Gray volunteers because he's just a projection, so the only issue is him straying beyond the range of the projectors, which is just far enough for him to see past the boundry.

* LiteralSplitPersonality: The holoprogram is able to detect and manifest Grey's consciousness within Adira.

* ImprovisedWeapon: Osyraa orders the ''Viridian'' to delpoy its supply of pesticide, which she plans to detonate with a torpedo, sending contaminated debris into all the nearby ships. Burnham convinces Admiral Vance to let them go so Ni'Var's fleet won't be destroyed by the attack.

* MegaMawManuver: Osyraa has the ''Viridian'' pull ''Discovery'' into its shuttlebay when the nacelle is disabled. Burnham takes the opportunity to drop ''Discovery's'' warp core in the middle of the ship while using the spore drive to jump out.

* PublicSecretMessage: Burnham makes an oblique reference to fireworks on a shipwide channel, which Tilly recognizes as an even that happened on her birthday the previous year. Tilly deduces that Burnham is telling her to disrupt one of the nacelles to knock ''Discovery'' out of warp.

* SuicideMission: The plan to disable the nacelles has to be done manually because the superconductors keeping the nacelles attached will prevent any remote detonate. Given that or suffocating, the bridge crew decides to go for it. Ultimately, Owo ends up going alone because only she can keep going under the strain of oxygen deprivation. Fortuantely, the Sphere data shows up in a DOT-23 to drag her to safety.

!!Tropes in this episode:

''(Season Finale)''