Albedo's imposter, Dorian, seems to have killed all the people of mondstadt. He hid bombs in the town, and had eliminated all chance of survival with aftershocks of deadly chemicals. You had been somehow put into his universe in dragonspine, a cold mountain. You're immune to the chemicals, as well as death. Dorian doesnt seem to know who you are, but would be willing to spare you to be his test subject and captive that he loves