A good plot could be that the world is suddenly hit by a wave of anti - superhero sentiment. Wonder Woman and Superman are two of the main targets. They have to go undercover and live among the humans for a while. During this time, they learn more about the regular people's fears and concerns. They also start to develop a romantic relationship as they rely on each other for support in this difficult situation.
One idea could be that Superman and Wonder Woman have to team up to stop an ancient alien threat that is immune to their individual powers. They must combine their strength, speed, and wisdom to find a way to defeat it.
Maybe in the fanfiction, Superman and Wonder Woman get married in a secret ceremony. Then they have to deal with the reactions of their superhero friends and the public. Some are happy, while others are worried about the implications of their union on the superhero community.
One plot idea could be a team - up where they face a new, extremely powerful villain that neither of them can defeat alone. This villain could have powers that are a combination of their weaknesses, like a being that can manipulate kryptonite and also has the strategic mind of Batman's enemies. They would have to learn to work together in a new way.
One plot idea could be that Naruto and Wonder Woman are brought together by a powerful villain who is causing chaos in both their worlds. They have to combine their unique skills, Naruto's ninja techniques and Wonder Woman's superpowers, to defeat the villain. Another could be a story where Naruto is accidentally transported to Wonder Woman's universe and he has to learn the ways of this new world while also helping Wonder Woman with a local threat.
A possible plot for spiderman x wonder woman fanfiction is that a group of super - villains from both their rogues' galleries team up. Spider - Man and Wonder Woman are forced to collaborate to take them down. During their adventure, they learn from each other's fighting styles. Spider - Man teaches Wonder Woman some of his acrobatic moves, and she in turn shows him how to better use his strength in combat. Their relationship evolves from reluctant allies to friends and perhaps more as they share their personal stories and values while fighting the bad guys.
One plot idea could be that an otherworldly threat emerges that only their combined powers can stop. They have to put aside their differences and work together seamlessly. For example, a powerful alien race plans to invade Earth and they need to use Batman's strategic mind, Superman's super strength and Wonder Woman's combat skills.
One idea could be that they team up to expose a corrupt politician. Wonder Woman uses her strength and combat skills, while Lois Lane uses her investigative journalism skills. They could start as rivals, both trying to get the story first, but then realize they're stronger together.
Maybe in the fanfiction, Percy gets transported to Wonder Woman's world. He has to adapt to the new environment while also helping Wonder Woman deal with a political unrest in her kingdom. Since Percy has experience with power struggles in the Greek god world, he offers unique insights. They start to respect and rely on each other more as they face various challenges together.
One idea could be that they are forced to team up against a common enemy who has the power to manipulate time. Black Widow's espionage skills and Wonder Woman's strength would make for an exciting combination in a race against time to stop the villain.
Another interesting plot twist could be that Wonder Woman loses her powers temporarily. In this state, Superman has to protect her while also trying to figure out how to get her powers back. This would reverse their typical roles and add an unexpected dynamic to their relationship in the fanfiction.