One idea could be an alien exchange student in a human academic setting. The alien has to adapt to human teaching methods and social norms while also hiding their unique alien abilities. Another could be an academy on an alien planet where different species come to study advanced technologies and inter - species relations are explored.
Perhaps a story where an alien race, known for their superior intellect, opens an academy for underprivileged species. The main character, a young alien from a less - developed species, struggles to keep up with the intense academic pressure. Meanwhile, a mystery unfolds within the academy as some students start to disappear. Is it a secret experiment or something more sinister? This would add an element of mystery and suspense to the fanfiction.
One idea could be that the resurrected alien has some new powers. Maybe it can now blend into its surroundings like a chameleon, which adds a new level of danger. Another could be that the alien forms an alliance with a group of humans who are outcasts from society, and together they try to take over a powerful corporation.
How about a fanfiction where the villains and heroes have to team up? There could be a greater threat, like an alien invasion or a powerful quirk - user who is out to destroy the entire world. The heroes and villains realize that they can't defeat this threat alone, so they put aside their differences. This would lead to some really interesting character interactions, like Bakugo having to work with Shigaraki and both of them learning to respect each other's skills despite their opposing natures.
One idea could be that Amanda discovers a way to communicate with the Alien on a basic level. Maybe she uses her engineering skills to create a device that emits frequencies the Alien can understand. Another could be that Amanda and the Alien form an unlikely alliance against a common enemy, like a group of rogue Weyland - Yutani employees who have their own malicious plans for the Alien.
One idea could be that an alien vampire infiltrates Ben's team. It pretends to be a friendly alien at first but then starts to slowly drain the energy of the other aliens. Ben has to figure out a way to expose it without endangering his friends.
One idea could be that Naruto discovers his alien mother left him with special powers that are not from the ninja world. For example, he might have the ability to manipulate energy in ways unseen in the Hidden Leaf Village. Another plot could involve Naruto's search for his mother's home planet, leading him on an intergalactic adventure where he meets all kinds of alien species and has to use his ninja skills in new and unexpected ways.
One idea could be an alien race coming to Kuoh Academy with unique powers that the devils, angels and fallen angels have to deal with. For example, an alien race that can manipulate time, causing chaos in battles and daily life.
One idea could be a young human who gets caught in the middle of an alien - predator conflict and has to use their wits to survive. Maybe they form an unexpected alliance with a lone predator who sees potential in the human. Another plot could be an alien - predator hybrid created by some mad scientist, and the two species have to team up to stop this new threat that is stronger and more unpredictable than either of them.
One idea could be that the aliens target the Dust in Remnant as a powerful energy source. The RWBY team has to figure out how to protect it while also learning about the aliens' technology to fight back.
There are many possible plot ideas. For instance, an alien race has a very different concept of love compared to humans. A human encounters an alien from this race and they have to learn about each other's ideas of love. Maybe the alien's appearance is completely different from what humans are used to, like having multiple limbs or a different form of communication. But through patience and understanding, the two develop a deep romantic bond. Another plot could involve a time - traveling human who meets an alien in a different era and their love changes the course of history in some way.
Perhaps the baby alien gets separated from the Queen early on. The story could then follow its journey to find its way back to the Queen while facing various challenges and making new allies. Along the way, it discovers more about its own kind and its special place in the alien hierarchy.