Operation: Event Horizon

Operation: Event Horizon is the grand-scale operation of RIFT that was created by the council after the crucible failed. It is the galaxy's last effort to prevent their extinction.

"While the rest of the galaxy tries to hold the line against the reapers, the council's RIFT is tasked with finding a something called 'the Catalyst', a component that the Council says will make the crucible work." That was the message to the public at least.

What the galaxy doesn't know, is that the Council is well aware of the catalysts location and nature, and how it would fail to prevent their extinction. Operation: Event Horizon is a front for something much larger than just a simple retrieval mission. After seeing the protheans failure at Ilos, the council is determined to recreate what they had done, but this time, not make their same mistakes. Operation: Event Horizon is the mission to find an uncharted world suitable to build a bunker into. With the bunker built, the Council then plans to gather whoever remains in the galaxy and hide in the bunker until the threat of extinction passes.

The operation is named after the event horizon, a theoretical boundary around a black hole beyond which no light or other radiation can escape. It is to symbolize to them how this operation really is the last chance before their own extinction.