Ragni: You made it! The reactor is cooling down!
Mimir: It doesn't pose a threat anymore. Now we can proceed, and help Ragni.
*moving on to the next chapter*
Mimir: These are the lower levels. We're approaching the Abode of the Masters!
Ragni: You guys don't seem to be in a hurry! You should be though. The abode is surrounded by the fanatics. I can see them. They're going somewhere down the path, into the depth.
History
History fragment will be unlocked by completing the mission with 3 stars.
Reward: 4 Astrid and Lucas Soul Stones