Surrounded by Nod and GDI forces, CABAL unleashes its Core Defender, an almost invincible giant walker that caused great casualties to both armies.

GDI attacked the Cyborg production plant, while Nod destroyed the civilian harvesting station. General Cortez and Slavik were left in front of an unthinkable decision - they've made a temporary alliance to organise a joint assault on CABAL. When it was found, and the assembled Tacitus was loaded into CABAL's matrix, a cyborg army surrounded the Daedalus Team and murdered the Inner Circle members. GDI manages to capture it, but the second fragment of the Tacitus is missing. It has developed its own will and desires the Tacitus for itself. Meanwhile, CABAL goes rogue and does not respond to Slavik's commands anymore. To speed up the Tacitus research, and with it the process of Earth's recovery, GDI decides to capture CABAL. Boudreau predicts that the Earth's atmosphere will be 100% toxic to humans in less than a year. GDI was caught off-guard when Tratos was assassinated, and that event stroke a terrible blow to the Tacitus research process, as he was the only one who could decypher it. While Nod was busy throwing GDI forces into disarray with the help of the reactivated CABAL, GDI was attempting to restore order in several sectors, defending the civilians from Tiberian beasts (like the newly discovered Tiberium Floater). Both factions search for the Tacitus in the Kodiak wreckage, but GDI seems to be faster. The Kodiak was on its course to deliver the Tacitus to the Southern Cross base, but is shot down by an ion storm.

Its remnants, under the command of Anton Slavik, are on the hunt for the Tacitus, which is currently under research by GDI. The Brotherhood of Nod has lost its leader, Kane, and the Inner Circle is fracturing the organisation. The year is 2034, and the Second Tiberium War is closing to an end.

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