You should have acted. They're already here. The Elder Scrolls told of their return. Their defeat was merely delay until the time after Oblivion opened, when the sons of Skyrim would spill their own blood. But... there is one they fear. In their tongue he is Dovahkiin; Dragon Born!
Cortman13 says
There are plenty of other reviews out there (fan and professional) that explain why this game is awesome, so I won't waste time writing what you've already heard. In short, this game is its own world, but the mods make it a universe. Have fun :)