This action was desperation, it was obvious.
The two primarchs stared at the war torn walls of the home of the gods, it's beautiful architecture was nearly destroyed, much to the dismay to the both of them.
"My Primarch." An Iron Warrior kneeled before them.
"Rise, Marine." Stated Perturabo
"I assume you have seen the beacon of light before they made the last of them were destroyed, my lords?"
"we have, marine."
"Our psykers have identified it as a type of transportation spell, but where? We cannot say."
"Call up Magnus." stated Rogal Dorn.
____________
"It's not teleportation." The Red primarch stated "It's a time travel spell, I think it would be obvious why we should pursue."
"Yes, we should." said Perturabo. "Prepare the Legions." he faced his Captain.
"Sir! The Emperor, has contacted us on the matter." a marine held out a Phone like mechanism.
"Yes father?"
"Yes... how did you know that?"
"then why did you call?"
"what?"
"What did father say brother?"
"he said to not pursue."
"lets not pursue then, agreed?"
"agreed."
Really short chap but K