A really cool plotline could be centered around a real - life military unit that somehow gets their hands on some Warhammer 40k - like technology. They start using it, but then attract the attention of the Inquisition - like forces from the game's lore. They then have to prove that they are not heretics while also dealing with the new - found power and the consequences that come with it.
One interesting plotline could be a Space Marine finding himself in a situation where he has to protect a group of diverse female characters from different factions in the Warhammer 40k universe. This creates a harem - like dynamic as they all rely on him and he has to navigate their different personalities and abilities.
One interesting plotline could be about a low - level gamer character rising through the ranks in the Warhammer 40k universe. They start with a small, weak force and gradually build it up into a powerful army, facing challenges like rival factions and difficult terrains.
In some fanfictions, there might be a story where a human discovers an ancient Eldar artifact. This leads to an Eldar coming to claim it. Instead of fighting, they negotiate and end up on a journey together to understand the true power of the artifact. Along the way, they learn about each other's cultures and form an unlikely bond.
One interesting plotline could be a Dark Eldar raiding party stumbling upon a lost Imperial relic. They see it as a valuable item to either use for their own dark purposes or sell on the black market in Commorragh. Another could be a story about a Dark Eldar wych who tries to rise through the ranks by challenging powerful rivals within her own cult.
The plotline about the Dark Angels Space Marine chapter is also captivating. They have a dark secret in their past related to the Fallen Angels. They are constantly on a quest to redeem themselves while still serving the Imperium. And the story of the Sisters of Battle, a female - only military order in the Imperium, is full of tales of faith, combat, and loyalty.
One of the most popular characters is often the Space Marine. Their super - human abilities and noble, if sometimes dogmatic, nature make them appealing. They are often depicted as heroes in fanfiction, bravely facing the hordes of enemies in the dark and gritty Warhammer 40k universe.
A lot of the novels explore the origin and growth of the Black Templars. They have a rich history that is tied to the broader Warhammer 40k universe. Their relationship with the Imperium and how they uphold its values in their own unique, often more extreme, way is a central plotline. There are tales of individual Black Templars heroes rising through the ranks, facing impossible odds, and still emerging victorious, which is always exciting to read about.
One interesting plotline could be Merlin's early days in Camelot, his struggles to hide his magic while trying to prove his worth to Arthur. Another might be his encounters with different magical creatures that are not shown in the original series and how he manages to deal with them.
One interesting plotline could be their post - war life. How they deal with the trauma of the war and build a normal life together. For example, they might struggle with nightmares but find comfort in each other.
One interesting concept is the exploration of alternate universes within the Warhammer setting. Writers can create different versions of the well - known factions and characters. For example, an Imperial Guard unit with unique weaponry or a Chaos Space Marine with a strange and unorthodox backstory. Another concept is the focus on the individual stories of the common soldiers or civilians in the Warhammer world, which often gets overshadowed by the grand battles and epic heroes.