A great Guardians of the Galaxy 3 fanfiction concept could be a time - travel story. Maybe the Guardians accidentally get sent back in time and have to interact with their younger selves or even their predecessors in the Guardians' legacy. They would have to be careful not to change the future too much while also trying to find a way back to their own time. Another idea is a fanfiction that delves deeper into the relationship between Nebula and Gamora. How they grow closer or face new challenges together. And a third could be a story where the Guardians discover a new planet full of strange and powerful artifacts that they must protect from various factions who want to use them for evil.
One idea could be a fanfic where the Guardians have to team up with an old enemy to face a new, greater threat. Maybe a powerful cosmic entity that is threatening to destroy entire planets. Another idea is a fanfic focused on the backstory of a particular Guardian, like Rocket, exploring his life before he joined the team in more detail.
Well, you could have a plot where the Guardians accidentally stumble upon a parallel universe. In this universe, their counterparts are evil. They have to figure out how to return to their own universe while also preventing their evil doppelgangers from crossing over. Along the way, they might learn some secrets about the true nature of the multiverse and their own roles in it.
A great plot could be that a member of the Avengers gets lost in space and is found by the Guardians. The Guardians then have to bring this Avenger back to Earth, but on the way, they encounter a series of challenges that require the combined skills of both groups. Along the way, they form strong bonds and exchange knowledge about their respective worlds.
One idea could be a pre - Infinity War story where the Guardians try to steal an Infinity Stone from a powerful and unexpected enemy. Maybe a new race that has been secretly collecting powerful artifacts.
One idea could be a crossover where the Guardians accidentally enter the Star Wars universe. They might team up with the Rebel Alliance to fight against the Empire. Their unique powers and personalities would add a new dynamic to the Star Wars battles.
Well, you could have an OC that is from a long - lost civilization in the Guardians of the Galaxy universe. This OC might hold the key to a powerful ancient weapon or technology. For example, they could have a staff that can open portals to different dimensions. Or an OC who is a bounty hunter that initially goes after the Guardians but then ends up joining them. Also, an OC that is a musical prodigy from a planet where music has the power to heal or harm, and they use their skills to help the Guardians in various situations.
Well, there are fanfictions that put the Guardians in different universes. For example, a story where they end up in a steampunk - like universe. They have to adapt their technology and skills to this new environment. Also, some fanfictions explore the love story between Drax and a new character, a female alien who helps him deal with his past traumas. And then there are those that simply focus on the team's daily adventures, like trying to find a new place to party in the galaxy.
One idea could be a prequel story about how each member of the Guardians joined the team. For example, showing Star - Lord's early days as a scavenger and how he first came across the Orb. Another could be a story where the Guardians have to deal with a powerful new enemy that has the ability to control time, forcing them to race against the clock in a whole new way. Maybe a fanfic about the Guardians getting stranded on a strange planet and having to work with the local inhabitants, who have their own unique culture and powers, to repair their ship and escape.
An OC who is a shape - shifter could be interesting. They could infiltrate the enemy's ranks and gather intelligence for the Guardians. However, they struggle with their identity as they constantly change their form, and the Guardians have to help them find their true self within all the disguises.
One idea could be that Iron Man somehow gets stranded in the Guardians of the Galaxy's part of the universe. He has to team up with them to fix his damaged suit and find a way back home. His high - tech knowledge could be a great asset to the Guardians while their knowledge of the strange parts of the universe could help him.