Executor Artanis and High Templar Tassadar had returned to Aiur with the dark templar, an act viewed as treason by the Conclave, who considered the dark templar heretics. Judicator Aldaris led the Conclave in an attack on their forces to arrest them, sparking a civil war. Though Tassadar and his allies struck a small victory against the Conclave, the sight of protoss warriors fighting each other was too much for him to bear, and he surrendered to stem the fighting. Fenix and Artanis escaped, and Zeratul and his dark templar vanished.
Alone, Fenix and Artanis planned to strike back against the Conclave. Tassadar was being held prisoner in a stasis cell to await trial, but Fenix was sure the trial would end in Tassadar's execution. With Zeratul and his dark templar gone, Fenix saw Tassadar as their only hope to stop the zerg invasion, and resolved to release him. As the two prepared to move out, they were contacted by Jim Raynor, a terran who befriended Tassadar on Char. Raynor offered his aid in the mission to repay Tassadar for saving his men on Char, and took the field in his command ship, Hyperion.
The three were able to break through the Conclave's defenses and destroy Tassadar's stasis cell, but before they could retrieve him, Aldaris arrived with a large contingent of reinforcements from the Ara Tribe. Aldaris mocked their predictability in staging a rescue attempt and prepared to attack, but was halted by the return of Zeratul with a number of dark templar. Caught by surprise and outnumbered by the dark templar, Aldaris and the Conclave retreated and allowed Fenix and his allies to escape with Tassadar.
The player has a small starting force protected behind a walled-off base. Fenix and Raynor are available as hero units, Raynor commanding the Hyperion battlecruiser. While the Hyperion is powerful, repair is not possible for the entire mission due to the lack of SCVs, so use Hyperion with caution. The Furinax Tribe (purple) has two bases directly south and east of the player's base, and will attack with zealots, dragoons, and reavers. The Ara Tribe (red) harasses the player with air force of scouts and carriers and occasionally sends in templars through airdrop, which can be devastating to carrier groups if left unchecked. The player should initially build several photon cannons at the southern wall of their base to aid in fighting the Ara, and later accompanying their forces with observers.
The player's starting forces, properly microed, will hold off the enemy for a while, allowing the player to build up their economy and then begin to build their army. The Ara Tribe is heavily fortified on high ground with difficult to reach entrances, so an air force should be used. The player should build two stargates and construct a force of four or five carriers, and research their capacity upgrade and air weapons. These carriers can destroy one of the two Furinax bases, which are heavily slanted to ground attackers beyond dragoons and photon cannons. With one base destroyed, the player can expand to its ruins and continue to build their fleet of carriers larger, then destroy the other base. There is also a mineral field on the far eastern edge of the map the player may wish to claim.
The final target is Ara Tribe (red) main base to the south, where Tassadar's stasis cell is. The base is very well defended with fleet of scouts and carriers, aided by arbiters that may provide stealth service for nearby enemy units and freeze/isolate player's carrier fleet; even with a dozen of full-equiped carriers aided by scouts is not likely to penetrate the enemy defense in a direct assault. ‘Human wave tactic' may work but would be at great expense. A much more elegant way would be to set up an ambush site with carriers, scout, dragoons and around 4 proton batteries along the riverside, then use simply a scout as a bait to lure the enemy air armada into the trap. The entire enemy airforce could be depleted in several rounds in this manner and without the menace from the air, a fleet of only 5-6 carriers can level the enemy base, including the stasis, with absolute ease.