Oblivion (The Elder Scrolls 4: Oblivion)

The people help. Started the quest a bump in the night for joining the dark brotherhood. Eventually found a tavern which sits Rufus started. after entered the tavern, I began to fall life is like for me charagayt. I didn't do nothing. Move to another city too, the game says that it is not possible until I lose a life. Why and how to deal with it I do not understand.