A possible plotline is their family life. In fanfiction, we might see how they raise their children, if any. Maybe they have to protect their family from the dark forces that Vader is often associated with, while also trying to keep their relationship strong.
One possible plotline could be Padme hiding her pregnancy from the Jedi Council. Another could be Darth Vader finding out about the pregnancy and struggling between his loyalty to the Sith and his love for Padme and their unborn child. Or perhaps Padme trying to find a way to raise the child away from the dark side's influence.
The Sith Order could be one of the main antagonists. They might see Vader's marriage to Padme as a weakness or a deviation from the Sith path. So they could try to undermine their relationship or even harm Padme to bring Vader back to their full control.
Another plotline might be that Vader has a secret mission that requires Luke's help. They have to team up despite their differences, and along the way, they start to understand each other better. For example, Vader could be trying to stop a greater evil in the galaxy that even the Emperor doesn't know about.
In some fanfictions, Padme as a slave might be involved in a gladiatorial - like arena. She could be forced to fight for the entertainment of the rich and powerful. This would show her strength and resilience. And as she fights, she catches the eye of a powerful figure who either wants to use her for their own gain or becomes an unexpected ally in her fight against slavery. It could also lead to her learning unique combat skills that she later uses in her fight for freedom and justice in the galaxy.
Another plotline could involve them traveling to the future. Maybe they see a world where the Jedi have been fully restored and are working in harmony with the galaxy. This could make Vader question his past actions even more, and Luke could gain new insights into the future of the Jedi Order.
One popular 'darth vader and padme lemon fanfiction' might be the one that focuses on their secret meetings during the Clone Wars era. It delves into their hidden relationship and the emotions they had for each other. However, it's important to note that such fanfiction often strays from the official Star Wars canon.
In some fanfiction, there could be a plot where Ahsoka and Vader's battles are not just physical but also mental. They engage in a battle of wills across the Force, with Ahsoka trying to break through Vader's dark side conditioning and Vader trying to corrupt Ahsoka. This creates a very tense and complex dynamic between them.
One interesting plotline could be Anakin's struggle with his past self as Vader. Maybe in the fanfic, Anakin tries to prevent Vader from making the same mistakes he did, leading to intense battles of will and lightsaber duels.
Love is a major theme. Their love was intense and tragic, and fanfictions often explore different aspects of it, like how it endured or could have been saved. Another theme is the struggle between good and evil, as Anakin became Darth Vader. Padme represents the good he left behind, and fanfictions play with this dynamic.
One interesting plotline could be Caroline and Klaus adjusting to living in a new supernatural - friendly community as a married couple. They might face challenges from old enemies who are not happy about their union.