Rogal Dorn was designing new impenetrable fortresses for the imperium. As the Praetorian of Terra, he did not leave his office much, for his duty already took a toll. Suddenly, he feels a disturbance in the warp. Something not from the world he currently resides, or maybe even his universe. He becomes alert, and for good reason. A rift opens on his ceiling and a person falls and hits the ground with incredible force. The primarch keeps his stoic face, but not without its hint of hostility.