A standalone first-person shooter set in the Tiberian Sun universe.

The year is 2034, and the Second Tiberium War is closing to an end. The Brotherhood of Nod has lost its leader, Kane, and the Inner Circle is fracturing the organisation. Its remnants, under the command of Anton Slavik, are on the hunt for the Tacitus, which is currently under research by GDI. The Kodiak was on its course to deliver the Tacitus to the Southern Cross base, but is shot down by an ion storm. Both factions search for the Tacitus in the Kodiak wreckage, but GDI seems to be faster.

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). 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. Time is running short, as Dr. Boudreau predicts that the Earth's atmosphere will be 100% toxic to humans in less than a year. To speed up the Tacitus research, and with it the process of Earth's recovery, GDI decides to capture CABAL.