Someone has streamed the full story on Twitch after receiving their game early in the mail. So here we go:
So we know that the first two missions revolve around The Partners, so no real need to recap that.
During Dartmoor, Grey sets up a communications hub nearby - which is stormed by ICA operatives as 47 leaves Dartmoor. Grey is wounded and briefly gets away into the woods. While Grey is surrounded, he realises that 47 is among the ICA goons, disguised as one of them. 47 plans to help get Grey out of the situation, but before he can Grey grabs a goon, steals his gun and kills himself as he doesn’t want to be captured. 47 gets away as no one was alerted to his presence.
The ICA then begins to tie up the loose ends by hunting down Olivia. Meanwhile Arthur Edwards approaches Diana, reveals 47 killed her parents and tells Diana to give him a call. With Grey dead and unable to contact Diana, 47 then finds himself in Germany to find Olivia. She gets a call from him saying she is trapped in the club as the ICA have found her. 47 heads to the club and takes down the ICA agents so Olivia can escape.
Ultimately Olivia is injured, but survives and leaves with 47. Diana then contacts Arthur and tells her that she could become the new Constant. She can either fight change, or be the change. Olivia and 47 then come up with a plan to take down the ICA - blowing the whistle on the ICA to the public. So he goes to China to infiltrate the ICA’s communication hub to get all the evidence he needs to take the ICA down.
After taking down the targets, 47 removes references to himself and Diana from the data before releasing it to the world (the data also contains Elusive Targets, so they’re canonized now I guess). 47 is detected by the ICA and has to sneak out of the building undetected while guards search for the intrusion.
After 47 escapes, Diana contacts Arthur again who says there are other candidates for the Constant role, and says she needs him because 47 will not stop until he finds him. She also reveal’s 47 one weakness. Herself.
Olivia then contacts 47 and says she’s found footage of Diana with a Providence Herald at an airport. 47 takes this as a message she needs help and that she’s infiltrated Providence. After arriving at Mendoza, 47 meets Diana in-person to deliver the mission briefing (!). She needs 47 to eliminate her competition for the Constant role who are also at the vineyard, so that she can ensure she becomes the new Constant and can take Providence down.
With Diana’s competition eliminated, 47 approaches Diana but she tells him to meet her away from the crowds to come up with a plan to eliminate Arthur. However, when 47 arrives, he pulls out his gun and aims for Diana, but she activates an Ether neurotoxin she put on his hands earlier which starts to knock 47 out. Diana reveals she’s no longer loyal to 47 as she has learned of why her parents died, and giving up 47 was the price to pay to become Constant. She says goodbye to 47 and leaves as he blacks out.
We then see 47 halluncinating from the neurotoxin, seeing previously eliminated targets from the trilogy, 47 wakes up with Arthur standing above him, who reveals that Diana wanted 47 eliminated but he sees potential in wiping 47’s memory again and using him as he sees 47 as a useful tool. 47 then starts to “see” Grey who tells him this neurotoxin is playing on his fears and he needs to overpower it. “Grey” then tells 47 that this all part of Diana’s plan to destroy Providence and take Arthur down.
47 wakes up and finds himself alone in a lab and seeks out to eliminate Arthur. He opens a door with a crowbar only to discover this lab is on a moving train. He eventually finds Arthur, who offers the memory wipe injection to 47 and to join him, but 47 eliminates him. 47 stops the train, gets off it and walks away.
Later Diana is seen taking her Providence pin and throwing it into a fire confirming she was never drawn in by the power of Providence. Diana and 47 then speak on the phone, solidifying that they’re still working together and will continue to in the future.
END OF TRILOGY