What do you think of this :
The synod, still in search of ancient relics to gain back their lost power have found evidence of an ancient snow elf city, destroyed by the dwemer in ancient times. The ruins of this city are located in a part of blackreach, which has been closed off of the main cavern. This city would contain a magic device capable of creating a rift to another dimension.
The Psijic order learns of this discovery and calls you to the college Winterhold in order to get the device first and stop the synod form getting it.
You go to blackreach and find the city, but there you learn that the device was taken about 80 years earlier, by agents of the Thalmor. They took the device just over the border to Morrowind, near the city of backlight.
You are sent to Blacklight to investigate what happened to the device. Evidence points to an abandoned Imperial stronghold not too far from the city. After a search, The device appears to have been stolen not long ago.
You report back to the Psijic order. The only way to find out who took the device is to go back in time 80 years earlier to the time it was brought to the fort. In order to do this, you need to find the elder scroll of Time so they can open a portal in time. The scroll is hidden in Markarth, in the oldest part of the old dwemer city.
After you Find it and the rift in time is opened, you find youself in the city of Winterhold about 80 years ago. After inquiring in the city, you learn that a magical device was loaded unto a ship by Thalmor mages set to sail to backlight. It's too late already however as the ship left the port. You suddenly see a big magical shockwave forming over te ocean, creating severe storms and shockwaves. The city starts to collapse into the sea. You make your way back to the portal and back to the present.
The mages of Winterhold and the Psijic order, concerned that the thalmor have a magical device that basically caused the great collapse want you to intercept them and bring the device to Winterhold.
Since they now know the Thalmor have it, the assume they'll take it to the Thalmor embassy in skyrim, where they can keep it safe.
You ambush the Thalmor party guarding the device and bring it to Winterhold where the psijic order and the mages decide to destroy it, as it's too dangerous to keep anywhere in Tamriel. the device can't however be destroyed by standard weapons or magic.
In order to do so, you need to find a certain sword, created by the snow elves. After you find the sword, the device is destroyed and all is well again
