A great plot for a Young Justice Nightwing scars fanfiction could be that the scars are actually a key to an ancient mystery. Nightwing discovers that his scars have a pattern that matches an old prophecy. He then embarks on a journey, with the help of the Young Justice team, to uncover the meaning of the prophecy and what it has to do with his scars. This could involve exploring ancient ruins, facing off against guardians of the mystery, and ultimately learning something about his own destiny.
Maybe the fanfiction could center around Nightwing trying to hide his scars from the team at first. He's afraid that they'll see him as weak or damaged. But as the story progresses, he realizes that his scars are a part of him and that his team will accept him no matter what. Along the way, he has to face an enemy who specifically targets his scars in combat, making him confront his fears head - on.
One possible fanfiction could be where Nightwing gets his scars during a particularly brutal fight against a new, powerful villain in Young Justice. The story could focus on how he deals with the physical pain as well as the mental struggle of having visible scars that might make him seem more vulnerable to his enemies.
They could be on a training exercise together that turns into a real threat situation. For example, they are in a simulated battle scenario but then an actual group of villains attacks the training ground. Nightwing and Artemis have to quickly shift from training mode to combat mode. Nightwing uses his acrobatic skills and martial arts training, and Artemis uses her bow and arrows. They fight side by side and protect each other throughout the chaos.
One possible plot could be Nightwing joining Young Justice as a mentor. He'd bring his years of experience from being Robin and working with Batman. He could train the young heroes in new combat techniques and also teach them about stealth and detective work.
One plot idea could be that the reader is a new recruit in the Young Justice team. Nightwing takes the reader under his wing to train them. As they train together, they start to develop feelings for each other. Along the way, they face a common enemy that tries to divide the team, and they have to work together to overcome it and in the process, their relationship deepens.
One idea could be a story where Nightwing has to train Robin in a new and dangerous combat technique. They could face off against a powerful new villain in Young Justice that specifically targets their mentor - protégé relationship.
Maybe there's a situation where a powerful artifact is discovered that has a connection to both Nightwing's family and Starfire's alien heritage. They embark on a quest to understand the artifact's true nature. During this journey, their relationship grows stronger as they face various obstacles and puzzles.
A possible plot could be that Slade has some information that Nightwing desperately needs. In exchange for this information, Slade makes Nightwing go through a series of dangerous trials. As Nightwing progresses through these trials, he starts to understand more about Slade's motives and his own limits. This could also involve some flashbacks to their previous encounters and how they have shaped their relationship.
A plot could revolve around a misunderstanding between Nightwing and Starfire. For example, Starfire might misinterpret one of Nightwing's actions as him not trusting her. This could lead to some tension between them at first, but then they would have to work through it and in the process, their relationship could grow stronger. They could have deep conversations about their feelings and past experiences that bring them closer together.
One idea could be that Nightwing has to train the Young Justice team in some new combat techniques. Maybe there's a new threat in Gotham that requires their combined skills to take on. Another could be a time - travel plot where the Young Justice team gets sent back in time and meets a younger Nightwing, and they have to work together to get back to their own time. Or perhaps Nightwing goes undercover in Young Justice to investigate a mole, leading to a lot of mystery and drama within the team.
One possible plotline could be them teaming up on a mission. Maybe they are sent to a magical realm where Nightwing's combat skills and Zatanna's magic are both needed to defeat a powerful villain. For example, a sorcerer who is using dark magic to corrupt the land and its people. Nightwing could use his acrobatic skills to dodge attacks while Zatanna uses her spells to counter the sorcerer's magic. Another plotline could involve a mystery that they have to solve together. It could be related to a series of disappearances in a city, and they discover that it has something to do with a long - lost magical artifact that Zatanna has some knowledge about. As they work together, they might also start to develop feelings for each other, adding a romantic sub - plot to the story.