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Celebrate 12 years of Star Trek Online with Season Twenty-five: Shadow's Advance, now live on PC!

Check out the new Event Grand Prize - the Tier 6 Khitomer Alliance Jarok Alliance Carrier, or check out some of the new prizes available from the Discovery: Emerald Chain Lock Box!
And as always, Spoiler warnings ahead!


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Mission Text[]

<Rank>, there's been a serious temporal incursion. Head to Deep Space Nine and use the wormhole to travel to the Gamma Quadrant as soon as possible.

Once we're through the wormhole, we'll be travelling to what becomes the New Khitomer system, in the 28th century. It's on the fringe of current Dominion territory, so we should be able to transit in time before they're aware of us.


Use the Bajoran Wormhole to reach the Gamma Quadrant and travel to New Khitomer.


  • Shall We Not Revenge
    • Go To Deep Space 9
    • Briefing
    • Fight TLF Forces in the Area (0/5)
    • Approach the Temporal Fleet Station
    • Beam Down to the Station
  • Running the Gauntlet
    • Go To New Khitomer
    • Briefing
    • West Hall
      • Search For an Entrance to the Assembly Hall
    • Lobby
      • Enter the Lobby
      • Defeat Krenim and Na'kuhl Forces (0/4)
    • East Hall
      • Seek a New Route Into the Assembly Hall
      • Defeat Na'kuhl Sentries (0/2)
      • Enter Assembly Hall
    • Assembly Hall
      • Enter the Assembly Hall
      • Defeat Krog and Boratus
      • Check on Daniels
      • Access the Console
        • Activate the Temporal Ops Relay
    • Beam Up
  • The Die is Cast
    • Go To Deep Space 9
    • Receive Briefing From Crew
    • Approach the I.S.S. Enterprise
    • Hail Admiral Leeta
    • Defeat the Vorgon Ships
    • Defeat the Na'kuhl Forces
    • Pursue the I.S.S. Enterprise
    • Hail Admiral Leeta
    • Defeat the Krenim Vessels
    • Defeat the I.S.S. Enterprise and the Terran Fleet
    • Catch the I.S.S. Enterprise
    • Return to Your Time
  • Hail Temporal Command






Terran Empire[]

  • Critter Rank 1 icon.png Terran Ensign Engineering Officer
  • Critter Rank 3 icon.png Terran Commander Engineering Officer
  • Critter Rank 3 icon.png Terran Commander Science Officer


NPC starships[]




Terran Empire[]



Icon Name Description How to Get Points
Disciple of Sun Tzu icon.png Disciple of Sun Tzu Read the journals of the Temporal Liberation Front leaders in Til the End of Time[sic] Read the 4 PADDs, one in each side room off the corridor while searching for an entrance to the assembly room. The door to the last side room is locked, but can be unlocked with the console in the assembly hall. 10


For a walkthrough of this mission, visit the Walkthrough page.

Mission Replay[]

This mission is repeatable through Mission Replay, although the Rewards for completing may be reduced.

Level Rank SP Exp Ore Mark <>
60 Fleet Admiral ___ ___ 192 XII


  • Temporal Reckoning was released on July 6, 2016 as part of the Agents of Yesterday expansion, continuing the Future Proof story arc.
  • The Disciple of Sun Tzu accolade is hidden at the end of the Running the Gauntlet section. The Temporal Ops Relay console allows to open all Security Doors, including the previously closed room in the East Hall. To obtain the accolade, the fourth PADD needs to be found before beaming back to the ship.
  • This mission appears to have developed a bug as of November 2019. When it comes time to engage the Terran fleet, the I.S.S. Enterprise will not engage you or your allies, but will instead start flying around the battle area at a high speed. Using full impulse to catch the Enterprise and fire on it may provoke the ship into combat mode, at which point it will move to an area on the map near where you were battling the Terran forces to begin with. The mission will proceed normally from there. [There is a patch to fix this forthcoming ( ]

v · d · e
Storyline Missions      
All Starfleet Factions Starfleet-only
Tutorial DSC Starfleet only “Graduation Day”“Routine Maneuvers”“Trial by Fire”“The Shadow Knows”“Children of War”“Reporting In”
TOS Starfleet only “I Sing of Arms”“Search and Rescue”“Bull by the Horns”“Dislodging Klingons”“The Taurean Affair”“Earthward Bound”
25th century Starfleet only “Graduation Day”“Training Cruise”“Field Promotions”“Communication Breakdown”“Assimilation of the Innocent”
Agents of Yesterday TOS Starfleet only “Explore Earth Spacedock”“In the Shadow of Cestus”“Painful Omens”“Return to Babel”“Tangled Webs”“The Battle of Caleb IV”
Klingon War “Welcome to Earth Spacedock”“Diplomatic Orders”“Stranded In Space”“Researcher Rescue”“Secret Orders”“The Doomsday Device”“The Galaxy at Large”
Romulan Mystery “Heading Out”“Empress Sela”“Desperate Measures”“Shadow Play”“Taris”
Faction KDF.png Klingon Defense Force-only
Tutorial “End of Watch”“Red Alert!”“Intruder Alert”“Challenge for Command”“Your New Command”“Journey to Qo'noS”
Empire “Duties of Command”“The Hunt is On”“Space Chase”“Manhunt”“Friend or Foe”
Warzone “Bringing Down the House”“The House Always Wins”
Vigilance “Mars, the Bringer of War”“Alpha”
Fek'Ihri Return “Blood of the Empire”“Destiny”“Afterlife”
Faction Romulan Republic.png Romulan Republic-only
Tutorial “A Day on the Farm”“A Day in the Sun”“Virinat, Invaded”“Flight from Virinat”
From the Ashes “Explore the Flotilla”“The Helix”“Crossroads at Crateris”“Gasko Blues”“The Search for New Romulus”“Turning Point”“Neutral No More”
Allies “The Price of Neutrality”“Memory Lane”“Bigger Picture”“Smash and Grab”“Tradecraft”
In Shadows “An Inside Job”“Enemy Action”“Sleepers”“Cloak and Dagger”“Revelation”“Mind Game”
Wasteland “Secrets of Nimbus”“The Lost City of Paradise”“Blind Men Tell All Tales”“The Undying”“A Fistful of Gorn”“Installation 18”
Vengeance “Voice of the Voiceless”“Abducted”“Small Packages”“Last Stand”“The Best Defense”“Turnabout”“Devil's Choice”
Freedom “Toward Freedom”
Faction Dominion.png Dominion-only
Engineered for War “Hunt”“Ceremony”“Turn the Tide”
Faction Khitomer.png Cross-faction
Cloaked Intentions “The Vault”“Mine Enemy”“Frozen”“Coliseum”“Cutting the Cord”“Darkness Before the Dawn”
Cardassian Struggle “Lost and Found”“Spoils of War”“Jabberwocky”“The Factory”“The New Link”
Borg Advance “Task Force Operations”“Report on Borg Activities”“Where Angels Fear to Tread”“A Gathering Darkness”“Assimilation”“Fluid Dynamics”
New Romulus “New Romulus Aid”“Staging Area”“Hidden Camera”“Warehouse”“Mountain Base”“Secret Shuttle Codes”“Overgrown Caves”“Web Access”“Latest Findings”“The Power Source”“Secrets of the Ancients”
Solanae Dyson Sphere “Sphere of Influence”“Circles within Circles”“Supply Woes”“The Contested Zone”“The Omega Standoff”“Tower Control”“A Step Between Stars”“Fluidic Destruction”“Surface Tension”
Delta Quadrant “Escalation”“Mindscape”“Reunion”“Friends in Unlikely Places”“Revelations”“Enemies in All the Usual Places”“All That Glitters”“The Kobali Front”“Capture the Flag”“The Dragon's Deceit”“Alliances”“Know Your Enemies”“Revolution”“Taking Care of Enemies”“Takedown”“What's Left Behind”“Dust to Dust”
Iconian War “Uneasy Allies”“Blood of Ancients”“Delta Flight”“House Pegh”“Time in a Bottle”“Broken Circle”“Butterfly”“Midnight”
Yesterday's War “Temporal Ambassador”“The Once and Future Agent”“The Core of the Matter”“Vorgon Conclusions”“Terminal Expanse”“Survivor”
Future Proof “Sunrise”“Stormbound”“Time and Tide”“The Temporal Front”“Temporal Reckoning”“Ragnarok”
New Frontiers “Echoes of Light”“Of Signs and Portents”“Mirrors and Smoke”“Brushfire”“Beyond the Nexus”“Melting Pot”“Scylla and Charybdis”“The Renegade's Regret”
Gamma Quadrant “Storm Clouds Gather”“Armistice”“The Search”“Doomed to Repeat”“Quark's Lucky Seven”“Tenebris Torquent”“Home”
Age of Discovery “The Plausibility of the Possible”“Impossibility of Reason”“Secrets”“Downfall”
J'Ula's Discovery “Para Pacem”“Illusion of Communication”“Beneath the Skin”“Sentinels”“Rescue and Search”“Within The Briars”“The Ninth Rule”“Ruins of Doom”“The Measure of Morality (Part 1)”“The Measure of Morality (Part 2)”
Klingon Civil War “The Centre Cannot Hold”“The Khitomer Discord”“Partisans”“Knowledge is Power”“Leap of Faith”“Warriors of the Empire”“A Day Long Remembered”
Terran Gambit “Firewall”“Red Shift”
Some missions may appear in alternative orders for some factions.
Mission available Side Content: The Galaxy at Large
Spectres “Spectres”“Skirmish”“Spin the Wheel”“What Lies Beneath”“Everything Old is New”“Night of the Comet”
Wasteland “Secrets of Nimbus”“The Lost City of Paradise”“Blind Men Tell All Tales”“The Undying”“A Fistful of Gorn”“Installation 18”
(Still part of main episode progression for Romulan Republic players.)
Lost Dominion: The 2800 “Lost Dominion”“Second Wave”“Of Bajor”“Operation Gamma”“Facility 4028”“Boldly They Rode”
Cold War “Cold War (wrapper)”“Cold Call”“Out in the Cold”“Cold Comfort”“Cold Case”“Cold Storage”
Delta Quadrant “Kobali Crisis Act I”“Kobali Crisis Act II”“Kobali Crisis Act III”
See also: Featured episodePatrolRemoved MissionsTask Force Operation