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This article is about the STO mission. You may be looking for the mythological Scylla and Charybdis.

Scylla and Charybdis is an all-factions mission in the game Star Trek Online, part of the New Frontiers series about the Tzenkethi Crusade and the Lukari people. It precedes the mission "Melting Pot" and is followed by "The Renegade's Regret". "Scylla and Charybdis" was released on 23 January 2018 as part of Season 13: Escalation.

The SOTL - Ships of the Line calendar: 2022 September image titled Star Trek Online: "Scylla and Charybdis" represents a scene from this mission.


The Alliance has decided that its defensive tactics against the Tzenkethi have gone on for too long and it is now time to bring the fight to them. Find the Tzenkethi Fleet and end their protomatter crusade once and for all.



D'TanJ'mpokKuumaarkeLorissMartokNogOdoNeth ParrAarn Tzen-TerrakJorel QuinnWaram Tzen-Gravu

Starships and vehicles

USS Challenger (NCC-71099) (Galaxy-class) • USS Enterprise (NCC-1701-F) (Odyssey-class Yorktown-subclass) • IKS Bortasqu' (Bortasqu'-class) • IKS Kurak (Kurak-class) • LSS Reskava (Lukari Ho'kuun-class science vessel) • RRW Lleiset (Tulwar-class) • Perikian-class Bajoran interceptor • IKS Rotarran (B'rel-class bird of prey) • Hur'q Chidyat-class swarmer


Bajor systemDeep Space 9NGC-8818NGC-9835NGC-10012Tzenkethi Battlestation

Groups and Organizations

Bajoran MilitiaDominionHur'q SwarmJem'Hadar Vanguard FleetKlingon Defense ForceKlingon EmpireRomulan RepublicRomulan Republic NavyTzenkethi CoalitionUnited Federation of Planets

Races and Species

AndorianBajoranFerengiFounderHur'q (Drantzuli) • Jem'HadarKlingonTrillTzenkethiVorta



Federation episodes in Star Trek Online
Tutorial (DSC) Graduation DayRoutine ManeuversTrial by FireThe Shadow KnowsChildren of WarReporting In
Tutorial (TOS) I Sing of ArmsSearch and RescueBull by the HornsDislodging KlingonsThe Taurean AffairEarthward Bound
Tutorial Graduation DayTraining CruiseField PromotionsCommunication BreakdownAssimilation of the Innocent UFP emblem image. Seal of the Federation Starfleet
Agents of Yesterday Explore Earth SpacedockIn the Shadow of CestusPainful OmensReturn to BabelTangled WebsThe Battle of Caleb IV
(Tour of Duty) (Prelude to a Crisis) • (Khitomer Crisis) • (The Price of Liberty) • (Assimilation) • (Gather Equipment) • (Line in the Sand) • Welcome to Earth Spacedock • (Skills Trainer) • (New Orders?)
Klingon War Welcome to Earth SpacedockDiplomatic OrdersStranded In SpaceResearcher RescueSecret OrdersThe Doomsday DeviceThe Galaxy at Large • (Hide and Seek) • (Stop the Signal) • (The Kuvah'Magh) • (War is Good for Business) • (Treasure Trading Station) • (Task Force Hippocrates) • (The Ultimate Klingon) • (City on the Edge of Never) • (Past Imperfect)
Romulan Mystery Heading OutEmpress SelaDesperate MeasuresShadow PlayTaris • (Under the Cover of Night) • (Minefield) • (Divide et Impera) • (Saturday's Child) • (Preemptive Strike) • (Hunting the Hunters) • (Project Nightingale) • (By Any Means) • (Ground Zero) • (Ghost Ship) • (Friend of My Enemy) • (Trapped) • (S'harien's Swords)
Missions in parentheses are no longer available as of the current version of Star Trek Online.
Klingon Empire episodes in Star Trek Online
Tutorial End of WatchRed Alert!Intruder Alert!Challenge for Command!Your New CommandJourney to Qo'noS • (First City) Emblem of the Klingon Empire
Empire Duties of CommandThe Hunt is OnSpace ChaseManhuntFriend or Foe
Warzone Bringing Down the HouseThe House Always Wins • (Test of Mettle) • (Second Star to the Right, Straight on 'til Morning) • (Keep Your Enemies Closer)
Vigilance Mars, the Bringer of WarAlpha • (A House Pursued) • (House on Fire)
Fek'Ihri Return Blood of the EmpireDestinyAfterlife • (The Gates of Gre'thor)
Missions in parentheses are no longer available as of the current version of Star Trek Online.
Romulan Republic episodes in Star Trek Online
Tutorial A Day on the FarmA Day in the SunVirinat, InvadedFlight from Virinat Emblem of the Romulan Republic.
From the Ashes Explore the FlotillaThe HelixCrossroads at CraterisGasko BluesThe Search for New RomulusTurning PointNeutral No More
Allies The Price of NeutralityMemory LaneBigger PictureSmash and GrabTradecraft
In Shadows An Inside JobEnemy ActionSleepersCloak and DaggerRevelationMind GameTemporal Ambassador
Wasteland Secrets of NimbusThe Lost City of ParadiseBlind Men Tell All TalesThe UndyingA Fistful of GornInstallation 18
Vengeance Voice of the VoicelessAbductedSmall PackagesLast StandThe Best DefenseTurnaboutDevil's Choice
Freedom Toward FreedomThe VaultMine EnemyFrozenColiseumCutting the CordDarkness Before the Dawn
Spectres SpectresSkirmishSpin the WheelWhat Lies BeneathEverything Old is NewNight of the Comet
Cardassian Struggle Venture into Deep SpaceBadlandsRapierForging BondsThe Long NightCrack in the MirrorSeeds of DissentThe New LinkSecond WaveOf BajorOperation GammaFacility 4028Boldly They Rode


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