The plot kicks off with the party being hired by Balgruuf the Greater, Jarl of Whiterun, to retrieve a pair of Dwemer artifacts that fell from the sky; one retrieved by the Stormcloaks, the other by the Thalmor. Each group is racing to unlock the secrets hidden in the artifacts, in hopes of using them to overthrow the Empire. But unbeknownst to them (and with any luck, unbeknownst to the players until the reveal), the artifacts don't actually contain any secrets, because the "Dwemer artifacts" are actually Wheatly and the Space Core from Portal 2. But in spite of this both sides are itching to go to war, fearing that the other side will succeed in unlocking whatever unspeakable power they believe is hidden in the spheres.
Think this is a good idea for a campaign?