Horus was in his ship, The Vengeful Spirit, Looking out into space while his fleet got ever so closer to Terra. He suddenly feels a disturbance in the Warp. Something not from the ship he currently resides or maybe even 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. Was this man a gift from the chaos gods to Horus? Who knows, only time will tell