entrusts the player with the Amulet of Kings, worn by the Septim emperors of Tamriel, and orders the player to take it to a man named Jauffre (Ralph Cosham), the grandmaster of the Blades, at Weynon Priory. Immediately afterward, one of the assassins kills the emperor. The player escapes the sewer and heads out into the open world of Cyrodiil. The lack of an heir for Uriel Septim has broken an old covenant—the barrier to Oblivion: a dangerous realm that is in another dimension. Multiple gates to Oblivion open, and an invasion of Tamriel begins by magical creatures known as Daedra, killing and destroying anything in their path. Jauffre tells the player that the only way to close the gates permanently is to find someone of the royal bloodline to retake the throne and relight the Dragonfires—with the Amulet of Kings—in the Imperial City. However, there is an illegitimate son named Martin (Sean Bean), who is a priest in the city of Kvatch. Upon arriving at Kvatch, the player finds that the Daedra have destroyed the city and very few survivors remain. A massive Oblivion Gate is obstructing the main city entrance, and the player must venture through the gate into the Deadlands—one of the planes of Oblivion—in order to close it from the inside and allow access to the city. After closing the gate, the player enters Kvatch and takes it back from the Daedra with the assistance of surviving guardsmen. Martin has survived, and the player persuades him to come to Weynon Priory. The player, now recognized as the Hero of Kvatch, returns to Weynon Priory with Martin, finding that it has come under attack by assassins and that the Amulet of Kings has been stolen. The player escorts Jauffre and Martin to Cloud Ruler Temple, the stronghold of the Blades. There, Martin is recognized as the emperor and is given command of the Blades. The player is optionally entered into their ranks and sets off in search of the amulet. After gathering information, the player learns that the group responsible for Uriel Septim's assassination and the theft of the amulet are the Mythic Dawn, a cult dedicated to the worshiping of Mehrunes Dagon, the Daedric Prince of Destruction. The cult believes Dagon is the true creator of the world and wish for him to "cleanse" it of all impurities. Killing the emperor and thus removing the barriers