So after reading the website, it sounds like this is a movie and not a TV series. I'm alright with that.
Stealing some pictures and translations from the /m/ thread:
One year after the opening of "Laplace's Box".
Even with the unveiling of the original "Universal Century Charter", and the existence of the rights afforded to "Newtypes" made public, the framework of the world did not change significantly.
The conflict surrounding the Box, later called "The Laplace Incident", appeared to have ended with the collapse of the Neo Zeon remnant army "The Sleeves".
In the final battle, two mobile suits with full psycho-frame specifications showed power that exceeded human knowledge. The White Unicorn and the Black Lion, the threat these two mobile suits posed were kept away from the public's knowledge by being sealed away, to be forgotten....
However, the RX - 0 Unicorn Gundam Unit 3, which had disappeared two years previously, revealed itself to the Earth Sphere once again.
It's name is Phenex - The Golden Phoenix.
Narrative Gundam (not sure if this is the final name?)
MS manufactured by Anaheim Electronics.
Piloted by Yonah Bashta.
Developed as a testing machine of the RX - 93 ν Gundam, giving it a similar appearance to that of the ν Gundam. As its main purpose was to acquire data as a testing machine, armor is not attached to various parts of the Mobile Suit, exposing its inner frame. In its basic form its only weapons are the head vulcans, however, utilizing the resources of Luo Industries for Operation "Phoenix Hunt", it is able to be equipped with a multitude of different weapons.
RX-0 Unicorn Gundam 03 Phenex
The Golden Full-Psycho Frame Unicorn Gundam Unit 03.
Used a test unit with data gathered from Unicorn Unit 01 and Unit 02, it caused an incident in UC 0095 in which it lost control, disappearing soon after.
Sinanju Stein
A prototype Mobile Suit developed as a follow-up to the UC development plan. Its development code is Stein 01.
In UC 0094, it is said to have been stolen from the Earth Federation Space Force Clop-class Space Cruiser "Unkai" during transportation.
Yonah Bashta(?)
Affiliated with the Earth Federation Space Army. Lieutenant rank. Pilot of the Narrative Gundam, sent as reinforcement on the "Phoenix Hunt" operation. Childhood friend of Michelle and Rita. From Australia, and suffered in his childhood due to the colony drop of Operation British.
Michelle Luo
Special Advisor to Luo Industries. With her almost clairvoyant fortune-telling skills, she has gained trust and influence within the political and business spheres. Serves on board the Clop-class Space Cruiser "Damascus", which carries out the "Phoenix Hunt" operation along with the Narrative Gundam.
Rita Bernal
Affiliated with the Earth Federation Space Army. Lieutenant rank. Pilot of the missing Unicorn Gundam Unit 3 Phenex. As with Yonah, she also suffers trauma from the Colony Drop in Australia in her youth, and in the past belonged to a group called "The Miracle Children"