A more action - oriented plot could be that the aliens are actually fleeing from a greater threat in the universe and their arrival on Earth draws that threat here as well. So the humans and the new - arrived aliens have to team up to fight off this common enemy, which could lead to some really cool battles and the development of new technologies as they combine their knowledge.
Another plot could involve a group of scientists being the first to make contact. They have to figure out how to communicate with the aliens who use a complex form of telepathy as their main means of communication. This would involve a lot of trial and error, and some tense moments when misunderstandings almost lead to conflict.
One idea could be that the aliens come in peace but their appearance is so strange that humans initially panic. For example, they might be made of a substance like jelly and can change their shape at will.
One well - known alien first contact story is the 'War of the Worlds' by H.G. Wells. It tells of Martians invading Earth, which was presented in a very realistic way at the time and caused panic among some readers. Another is the 'Contact' by Carl Sagan. It involves a scientist making contact with extraterrestrial intelligence through a radio signal. The story delves into the scientific, philosophical, and religious implications of such an event.
One idea could be that a Jedi crashes on Earth and has to hide their powers while trying to find a way back to the Star Wars galaxy. Another could be that a group of Sith arrive on Earth with the intention of enslaving the planet for its resources. Or perhaps the Galactic Republic discovers Earth and tries to initiate diplomatic relations but faces cultural misunderstandings.
A plot could revolve around a diplomatic mission during the First Contact War. Maybe a group tries to broker peace but faces many obstacles from both sides' extremists. This could explore the complex politics and cultural misunderstandings that fuel the war.
One interesting 'alien first contact short story' could be about a young astronomer who discovers a strange signal. When he deciphers it, it's an invitation from an alien race to visit their planet. He embarks on a journey filled with wonder and fear. Another might be a story where an alien ship crash - lands on Earth and the first human to approach it has a telepathic connection with the alien inside. The third could be a tale of an entire town seeing strange lights in the sky one night, and the next day they find a small, friendly alien in their midst.
A possible plot could involve a time - traveling aspect in the 'human first contact reaper fanfiction'. A future human, who has seen the destruction caused by the Reapers, travels back in time to the moment of first contact. This person tries to use their knowledge of the Reapers' weaknesses to stop them from ever establishing a foothold on Earth, but they have to deal with the disbelief of the people in that time period.
One idea could be a Vulcan ship getting stranded near a human colony. The humans, being naturally curious and helpful, try to assist the Vulcans. This leads to a series of cultural exchanges where the Vulcans' logical approach clashes and also meshes with the humans' more emotional nature. For example, the Vulcans might be baffled by human art forms that are based on pure emotion, while the humans are intrigued by Vulcan meditation techniques.
One idea could be an alien with unique telepathic abilities forming a deep bond with a human. The alien might be on a secret mission on Earth and the human gets accidentally involved. They start to understand each other's cultures and values, leading to a friendship that defies the differences between their species.
A plot could involve a group of humans who are caught in the middle of a war between Predators and Aliens. They form an alliance with a rogue Predator who has his own reasons for wanting to stop the fighting. Maybe there's a powerful Alien queen that the Predators are desperate to kill, and the humans get dragged into that mission.
One idea could be that Ben has to adapt to the daily life of the alien he's stuck as. For example, if he's stuck as a Four Arms, he has to deal with constantly breaking things because of his size and strength. Another could be that he has to find a way to communicate with his friends and family in his alien form, which might be difficult if the alien has a different language or way of expressing itself.
One idea could be exploring Alien X's internal conflict between Bellicus and Serena in a new situation. For example, when faced with a moral dilemma on a planet where two species are at war and both have valid reasons for their actions. Another plot could be Alien X having to deal with a powerful new enemy that can somehow disrupt his omnipotent powers. Maybe this enemy has the ability to split Bellicus and Serena's consciousness further, causing chaos within Alien X.