Stargate: The Ark of Truth (2008) Timeline Explained – Every Event in Order

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1. 1

   Dakara: fake Ark revealed

   SG-1 digs on Dakara and finds a box they believe contains the Ark of Truth. Daniel tricks the Ori soldiers into opening it, only to reveal a fake Ark. A Prior orders Tomin to kill them, but Tomin refuses; Mitchell kills the Prior, whose powers were blocked by the Anti-Prior device. The Ori soldiers surrender, and Tomin returns to Earth with SG-1.

   When

   Dakara

   Where

   Dakara

2. 2

   Tomin returns to Earth

   The surviving team returns to Earth with Tomin and takes up residence at the SGC for a time. The encounter ends the initial Dakaran incident and shifts focus to Earth-based strategy against the Ori. Tomin begins integrating back into Earth’s defense planning.

   When

   Earth

   Where

   Earth (SGC)

3. 3

   IOA interrogates Tomin

   General Landry and Mitchell meet James Marrick, an IOA representative, to interrogate Tomin. They explain Woolsey’s move to Atlantis and the Ark’s status remains unknown in the Ori galaxy. Marrick’s presence signals IOA involvement in the mission.

   When

   Earth

   Where

   Earth (SGC)

4. 4

   Odyssey travels to the Ori galaxy

   Daniel realizes the Ark is still in the Ori galaxy, and Marrick is assigned to accompany SG-1 aboard the Odyssey through the Supergate. The mission proceeds to recover the Ark and confront the Ori threat. The crew prepares for a dangerous journey into enemy territory.

   When

   Onboard the Odyssey

   Where

   Odyssey

5. 5

   Ark on Celestis; Ori alerted

   In the Ori galaxy, a resistance member says the Ark is on Celestis. SG-1 beams down to Celestis to verify and locate it, while Marrick uses an Asgard computer core to alert the Ori to the Odyssey’s presence. The search intensifies as the team closes in on Celestis.

   When

   Ori galaxy

   Where

   Celestis

6. 6

   Marrick unveils Replicator plan

   Marrick reveals his plan to weaponize a Replicator, using the power found on Celestis. He intends to plant it on an Ori ship so the Replicator can spread through their fleet. The IOA later acknowledges removing a weakness that could have prevented the threat.

   When

   Celestis

   Where

   Celestis

7. 7

   Marrick becomes Hybrid; jailed

   The Replicator escapes and infests Marrick, turning him into a Human/Replicator hybrid. He is placed in the ship's brig, isolating him from the mission while the team deals with the broader threat. The Replicator threat remains a looming danger aboard the Odyssey.

   When

   Space

   Where

   Odyssey

8. 8

   Odyssey flees Celestis

   With several Ori ships approaching, Mitchell attempts to beam Daniel, Teal'c, Vala, and Tomin up from the planet, but the Replicator blocks the system. The Odyssey jumps to hyperspace to escape, leaving the others behind on Celestis.

   When

   Escape

   Where

   Celestis (space vicinity)

9. 9

   Ark retrieved; ambush on Celestis city

   Daniel locates the Ark in a catacomb and brings it to the surface. The team is ambushed by Ori warriors in the city, and Teal'c is wounded. They are captured and taken to the Ori city, while Vala learns that the Ori were killed by the Sangraal and Adria has ascended.

   When

   Celestis city

   Where

   Celestis

10. 10

    Morgan le Fay’s weakening plan

    Morgan le Fay, appearing as Merlin, arrives and explains a plan: exposing a single Prior to the Ark could weaken Adria enough to be opposed. If successful, the Priors would be vulnerable and more easily turned. The plan sets the stage for a pivotal confrontation.

    When

    Celestis

    Where

    Celestis

11. 11

    Earth faces final Ori challenge

    A Prior arrives on Earth offering a last chance to convert to Origin. General Landry refuses to listen to the false prophet. The Apollo satellite detects a fleet of Ori motherships waiting at the edge of the Solar System, signaling an imminent invasion.

    When

    Earth

    Where

    Earth

12. 12

    Shutdown plan and Marrick’s death

    On the Odyssey, Marrick is attacked by Replicators who infest his body, turning him into a Hybrid. Mitchell disables the Replicator connection to Marrick’s brain and learns the shutdown code is on the other side of the crystal used to create them. He detonates an explosive to kill Marrick, and Carter activates the shutdown code to deactivate the Replicators.

    When

    Space

    Where

    Odyssey

13. 13

    Ark activates; Doci reveals truth

    The Ark is activated and opened, and the Doci is caught by the beam and shown that the Ori are not gods. He spreads this truth to all Priors in the Ori galaxy and beyond. SG-1 transmits the Ori knowledge to Priors across the Milky Way, turning many of them.

    When

    Final confrontation

    Where

    Ori galaxy / Milky Way

14. 14

    Aftermath and new mission prep

    Tomin departs for the Ori galaxy as the new leader of his people, while Vala chooses to remain with the SGC. The Ark is taken to Area 51 for study, and SG-1 prepares for another mission through the Stargate.

    When

    Aftermath

    Where

    Area 51 / Earth