Save Goal and Doc | Chasing Goal
Once the battle is over, Goal will travel to Doc's workshop, followed by Rufus. On the scene, you'll encounter Janosch and his team standing before a closed door. It turns out that Donna has imprisoned Goal and Doc. Knock on the door - a mysterious voice will suggest that you use the remote on Liebold, then cross trough the portal. Do so - you'll encounter a future Rufus. After a dialogue with himself, the hero will jump into the portal to find himself in Doc's workshop.
Talk to Goal and Doc, then approach the drawer on the left. Take two remotes. Use the Donna remote on Donna - it lacks a memory card. Talk with Lady Goal and con her with the talk about champagne. Place the acquired memory card in the remote, and use it on Donna. Take the crowbar and the weapon and proceed through the portal. Once you return to the workshop, leave the room through the door above the portal.
Use the crowbar on the electrodes. During the conversation with future Rufus choose "Zeeblezooble", the last option on the list. Click on the clock. Once the cut-scene ends, talk with Lady Goal using all of the dialogue options - you'll learn the horrible truth about Elysium.