The Ascendance Event is an event in which several specific bloodlines converge together throughout time, usually meeting up around a Piece of Eden. The underlying explanation is that this event occurs because of Sub-DNA, a part of human DNA which represents the collective human unconsciousness.
Sebastian Monroe, a former employee of Abstergo Industries, discovered that this Sub-DNA code exists in a select group of humans, separate from the primary DNA code, but that it was possibly part of all humans at some point. The Ascendance Event has only been documented a handful of times throughout history and is not well understood, governed by sympathetic genetic forces that are still being decoded.
Currently, a group of teenagers consisting of Owen Meyers, Javier Mondragón, Natalya Aliyev, Sean Molloy and Grace and David Collins contain the entirety of the Sub-DNA code between them, meaning they could, theoretically, access the Ascendance Event through the Animus.
The Ascendance event was originally engineered by Minerva, an Isu entity who used calculations and predictions that the last descendant's ancestors and the Trident of Eden would be drawn together down through the centuries to destroy it. When the six teenagers entered the "collective unconsciousness" simulation they had received a protective "shield" from Minerva to resist the powers of the Trident.
- The Ascendance Event seems to have some relation to the theory of the collective unconscious by Carl Jung, who wrote: "The collective unconscious comprises in itself the psychic life of our ancestors right back to the earliest beginnings. It is the matrix of all conscious psychic occurrences, and hence it exerts an influence that compromises the freedom of consciousness in the highest degree, since it is continually striving to lead all conscious processes back into the old paths."