The people of Tamriel are scrambling.
Alduin lay defeated, crushed utterly in a heroic sacrifice by the last, and late, Dragonborn. The great enemies to the motherland Skyrim, Harkon and Miraak, are dead. For a while, all was peaceful. Then, the Thalmor, led by Mistress Elenwen, led a peace conference between the warring Elisif and Ulfric. They claimed that High King Torygg's father had a bastard son with a Thalmor representative. They said that this High Elf, raised as a Nord, would make the perfect High King of Skyrim, ushering in a great alliance between the Nords and the Thalmor. Elisif was pressured to consider this, and for some reason Ulfric agreed to the conference as well.
This did not bode well with Skyrim's general population, nor any man or Argonian in Tamriel who feared the expansion of the Thalmor. The exact details are unknown, but its being pieced together.
The Conference of Riverwood was attacked by a pro-man military group with incredible force and precision. Elenwen, Ulfric and Elisif, along with their top advisers, were killed. This attacking force apparently left the message to "Teach a lesson to the Elf sympathizers. These traitors have been made an example of." Many old Stormcloaks, viewing Ulfric being at the Conference as a betrayal, have allied themselves with this new force.
The group was later revealed to have been lead by General Sidonis, who fought in the Great War against the Thalmor and was the Empire's best military tactician. He has styled himself Emperor Lyvander Sidonis I of the restored Alessian Empire. He has thousands of Nords and Imperials backing him, and under his military genius he has snatched the country of Skyrim for himself, proclaiming it the first of many to fall.
What has the people scrambling is that General Sidonis claims that the Thalmor, and by extension all Elves, are a threat to Tamriellic peace and always have been. He has ordered the execution of every Elven man, woman and child in Alessian territory. Thousands of Elves are already feared dead, and chaos is breaking out all over the continent as more flock to his cause every day. For every elf who dies, ten men and women join Sidonis's cause, seeing the Thalmor as a threat to Tamriel, with added animosity towards Elves. They reason that the Thalmor have been nothing but evil, the Dark Elves have always been at war with the Nords, an Elf caused the Oblivion Crisis that nearly destroyed the world, and of course Elves enslaved humans in the time of Alessia herself. A worrying consensus among the downtrodden is that the Elves have done more harm in Tamriel's history than good.
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In this roleplay, Cyrodiil has devolved into a near anarchic state as the Alessians press on, threatening to unify all of mainland Tamriel in a mass genocidal war against all Elvenkind. Those who haven't thrown their lot in with the extremists recognize that they need to be stopped, quickly.
The Imperial Empire is crumbling, so it is turning to outside help. It is taking any volunteers it gets to stop the Alessians. Your character will be someone who volunteered, or an Imperial soldier. We'll see the Alessian Empire expand and commit more atrocities, and at the same time the Thalmor will come up with some atrocities of their own, only adding legitimacy to Sidonis's cause. The strike team put together by the Mede regime, your characters, are initially mean to carve a path for Imperial soldiers, but as things take a turn for the worse, you'll gain more influence and autonomy.
We're dealing with genocide here so obvious this will be a serious RP, but that doesn't mean we can't enjoy ourselves. I expect a lot of character development and a good story driven RP, shaped entirely by your actions. Tamriel is in a state where it can be molded easily by those with the power to do so (when hasn't it been), and that might be you...