It could involve Anakin finding a way to resist the dark side's temptations through strong friendships or mentorship.
Perhaps Anakin discovers a hidden truth about the Sith that makes him wary and committed to staying on the light path. Or, he could form an unlikely alliance that keeps him from succumbing to the dark side.
The plot might involve Anakin being influenced by the good side of the Force more strongly. He starts having visions of a dark future if Palpatine continues to rule. Anakin then starts to secretly gather allies, including some Jedi who have survived Order 66. Together, they plan an attack on Palpatine. Anakin, with his enhanced power, confronts Palpatine directly. Their battle could be not just physical but also a battle of wills, with Anakin finally emerging victorious as he overcomes the dark side's allure within himself.
If Anakin doesn't turn in fanfiction, the galaxy would be a much different place. The Empire may never rise. There would be no Darth Vader to strike fear into the hearts of the Rebels. The Clone Wars might end in a more peaceful and just resolution, with Anakin playing a key role in brokering a lasting peace between the Republic and the Separatists.
Well, it could start with Anakin having a change in his mindset. He becomes more focused and determined to win against Obi - Wan. He studies Obi - Wan's every move and weakness. During the battle, he uses the environment to his advantage. For instance, he causes a landslide or some other natural disaster on the planet they are fighting on, which distracts Obi - Wan long enough for Anakin to strike the final blow.
Well, in this fanfiction plot, their shared origin as twins could lead to a different approach to the Force. Maybe they develop a new form of lightsaber combat that is based on their twin - like coordination. As the story progresses, Anakin's relationship with Padmé could also be affected. Since Obi - Wan is his twin, he might be more involved in Anakin's personal life. And when Anakin starts to feel the conflict between the Jedi Code and his love for Padmé, Obi - Wan, as his twin, tries to help him find a balance. This could potentially prevent Anakin from falling to the dark side, or at least make his fall a much more complex and drawn - out process.
Well, one possibility could be that Ezra returns with new Force powers. Maybe he has been on a journey to an ancient Jedi temple during his absence. He could use these powers to help the Rebels in a big battle against the Empire, like being able to sense the enemy's moves before they happen.
For the clones, it could be a confusing and demoralizing event. Ahsoka had a good relationship with many clones. Her death by Anakin, who was also their general, would make them question their loyalties and the nature of the war they were fighting. This could lead to some clones defecting or becoming more hesitant in following orders.
One possible plot twist could be that they are caught by Obi - Wan. Instead of reporting them immediately, Obi - Wan decides to help them cover up their relationship for a while. He realizes that their love is genuine and that Anakin's emotions are a powerful force that could be harnessed for good if managed properly. This would add a new layer of complexity to their relationships within the Jedi Order.
In many Star Wars fanfics, the relationship between Leia, Anakin, and the concept of a 'ghost' can be really interesting. Leia is Anakin's daughter, and in some fanfics, Anakin's ghost might play a role in guiding or protecting her. For example, he could appear to her at a crucial moment, sharing some wisdom from the Force that helps her make a difficult decision. This could add a new layer of depth to their family connection that wasn't fully explored in the movies.
It would likely have led to a very different outcome for the Star Wars universe. Maybe peace would have been restored earlier.
In such fanfiction, Anakin often makes different choices that lead him to use his powers for good. Maybe he avoids succumbing to the dark side and instead becomes a hero.