When a knight-in-training sets out on a dragonquest to win the hand of a fair princess, he expects to return in time for a pavilion wedding in the fall. But after fifty years of tracking his quarry across godforsaken hinterlands, he is starting to wonder if he has the stamina to finish the job.

What if instead of the 2nd being expunged from Inperial records it's the 16th instead. What if the 2nd Primarch was found instead of Horus.

Star Wars the clone wars X Warhammer 40k

In the 50th millennium, there is only war. The Imperium is on the brink of collapse, Heretics and Traitors swarm over the Holy Lands of Terra. The Imperial Palace is surrounded and besieged, only one man can save the Imperium yet he is immobile, sitting on the Golden Throne.