From the journal of David Shepard:
Joker got me as close as we dared to get in Batarian space and then I took a shuttle to the Batarian prison. Breaking into the prison and finding Dr. Kenson was the easy part. Breaking back out of the prison was a lot harder. Kenson was not as experienced with combat as my squadmates so it took longer to take out a bunch of the Batarians and escape in a shuttle.
Once in the shuttle, Dr. Kenson told me about the project: seems she and her team had discovered a Reaper artifact that showed her visions of the Reapers arriving. There was a relay near by the asteroid they were working on called the Alpha Relay, and this relay could connect to all the relays in the galaxy. Kenson and her team were planning to slam the asteroid into the relay, preventing the Reapers from using the relay.
I had my concerns about the artifact, but Kenson assured me they knew what they were doing. Once at the project base, she showed me a countdown. In two days, the Reapers would arrive. That was not good. Then she showed me the artifact, just sitting out in the open unshielded. That was worse.
Then artifact showed me a vision of the Reapers arriving. That was bad. Then Kenson got angry at me, saying she could not let me stop the arrival, then she ordered the project staff to take me down. That was worse. I got really badly injured in the fight, and they took me to the medical bay.
I woke up in the medical bay, only for the attending staff to try shoot me again. I knocked two of them out, but the third staff member sealed me in the room. Luckily, I had access controls to some mechs and used them to shoot my way out. After listening to a datapad, I learned that they had kept me sedated over two days, and they had to keep upping the dosage. Not sure how I managed to break out of the sedatives but I assume it was due to the implants Cerberus gave me during Project Lazarus. I will have to thank Miranda for that later.
By this point the entire project staff was clearly indoctrinated and Kenson was the craziest fanatic of them all. I no longer felt bad about killing any of them I shot my way to the project control center, where I activated the fusion torches, setting the asteroid on a collision path with the asteroid. I tried to warn the Batarians on the nearby planet, but Kenson stopped the transmission to yell at me some more. I had to find Dr. Kenson and quickly.
Kenson then told me she was going to destroy the asteroid by putting the fusion reactor on meltdown, then ran away. Despite interference from the project staff, I managed to re-insert the cooling rods to prevent the meltdown. I then tried to talk Kenson down, but she refused to listen and blew herself up. I hurried to the landing pad outside, where the project staff was escaping. I killed as many as I could, then contacted the Normandy for extraction. Harbinger himself then talked to me through the communications relay, taunting me, telling me that my fighting was a futile effort. I essentially told him to stuff it and that I would find a way to win. The Normandy then picked me up and we beat a retreat through the relay before it was destroyed by the asteroid.
Later, Admiral Hackett himself came to see me. He thanked me for the effort and expressed regret that his old friend had been indoctrinated. He also told me the Batarians wanted retribution and that the Alliance was ready to put me on trial to placate the Batarians; they did not want to go to war while the Reapers were coming. Hackett did assure me that he would stall the Alliance for as long as he could.
The crew seemed relieved that I was still alive, and I was glad to see that Tali had recovered from her illness.
And someone dyed my hamster purple. Terrific.