This is a work in progress

This was made by one hardcore Star TrekTM fan (me) and one hardcore HaloTM fan (my friend)

NOTE: This is completely a "what if" story. The "what if" scenario asks "what if the Federation, specifically Picard and his crew, were to encounter a divided Covenant where one faction is led by the Sangheili and the Jiralhanae lead the other. The source material solely comes from TNG and the Halo universe so anything else (and a few things from ST: TOS) is not involved.

The Covenant is divided into two factions: the Sangheili and the Jiralhanae. The Prophets of Truth and Mercy have gained some support from the other Prophets (San 'Shyuum) and have gone over to the Jiralhanae side, while the rest join the Sangheili. Other species have also divided and taken sides, such as the Unggoy, the Kig-Yar, and the Mgalekgolo. In short, it's been full blown civil war between the Covenant.

The Forerunner are not exactly what they are in the Halo universe. Here, we have made them an ancient, technologically advanced, and extinct race that the Covenant believes to be gods. The techs they find are, in the Covenant's beliefs, to be gifts from the gods and are to be used for a) religious conversion b) interstellar travel or c) war. In order to make the Covenant more threatening in the ST universe, there have been some modifications:

There is no Flood. The purpose of Halo rings that are found is shrouded in mystery, yet the knowledge of their power is documented.

The Covenant are able to understand each other species' language with no problems.

Slipspace is almost instantaneous to ensure quick and easy mobility that can outmaneuver the Enterprise-D and other Federation ships.

Though plasma is ineffective against thermal blasters, the concentration is higher and denser, packing a more powerful punch.

The main thing to look at is how the Federation reacts to the Covenant. Things like "take no prisoners" will be brought up constantly, as well as the process of glassing a planet. Furthermore, there will be casualties that would never happen in the show or movies (except those damn new movies. I only accept them because they are giving us an AU theme). Without further ado, enjoy!