All keys are Region Free. You can activate the key in any country.
The story begins with Emperor Uriel Septim VII, accompanied by the Blades - his bodyguards - arriving at the Imperial City prison, where the protagonist is serving time for an unnamed crime. The Emperor and the Blades are on the run from the Mythic Dawn assassins, a Daedric cult who killed the Emperor's three sons. Uriel Septim and the Blades escape through the catacombs, using the secret entrance in the protagonist's chamber. There, they and the player character who joins them are attacked by members of the Mythic Dawn. The Emperor entrusts the hero with the Amulet of Kings, worn by the emperors of Tamriel, and instructs him to give it to Joffrey, Grandmaster of the Blades. After this, one of the assassins kills the emperor. Then the main character finds himself in the open world of Cyrodiil