Sanguinius was eating grapes while watching down on the capital world of the imperium, terra, from his balcony. He suddenly feels a powerful disturbance in the warp. Something not from the world he currently resides... or maybe even universe. He becomes alert, and for good reason. A rift opens on the sky's of Terra and a person falls and hits the ground with incredible force. The citizens scream in terror while sanguinius gets his armor to go check the crater