Well, one possible plot could be that Sailor Moon and her friends get transported to the world of Legend of Zelda. They could team up with Link to fight against a common enemy like Ganon who has somehow allied with the Dark Kingdom from Sailor Moon. Sailor Moon could use her powers to heal Link when he gets injured in battles, and Link could teach the Sailor Scouts some of his combat skills.
The plot might involve the Sailor Scouts' crystals being stolen and ending up in the world of Zelda. Link discovers these strange crystals and starts to investigate. Meanwhile, Sailor Moon and her friends follow the energy trail to the Zelda world. They then join forces. For example, Sailor Mercury could use her intelligence to help Link solve some of the puzzles in the dungeons, while Link protects the Scouts from the various monsters in the land.
In a Sailor Moon and Legend of Zelda crossover fanfiction, perhaps there is a dark force that is threatening both the Moon Kingdom and Hyrule. Sailor Moon and Link are both chosen as the heroes to stop this threat. Sailor Venus could use her love powers to charm some of the friendly creatures in Hyrule to get information. The Zelda side could contribute with their magic items. For instance, the ocarina could be used to unlock some special powers within the Sailor Scouts. And together they battle against this new and powerful evil.
In a crossover fanfiction, the interaction would be complex. The Sailor Scouts, being from a more modern - ish and magical girl - focused world, would bring a different energy. Sailor Moon's leadership would be a new concept for Link. He's used to being on his own for the most part. But he would soon see the value in having a team. The Sailor Scouts would be fascinated by the different races in the Zelda world, like the Gorons and Zoras. And the Zelda characters would be intrigued by the Sailor Scouts' transformation sequences. They might see it as a form of powerful magic. There could also be some cultural exchange. For instance, the Sailor Scouts could introduce some of their Japanese - inspired food to the people of Hyrule, while the Zelda characters could show the Sailor Scouts their traditional dances and music.
Well, one possible plot could be that the Sailor Scouts are transported to the Pokemon world. They might team up with some Pokemon trainers to fight against a common enemy. Maybe an evil organization is trying to use both the power of the Dark Kingdom from Sailor Moon and some powerful, dark Pokemon. The Sailor Scouts' magical powers could interact in interesting ways with the Pokemon's abilities.
Maybe there could be a villain that is causing problems in both worlds. The Sailor Scouts and Ranma could team up to fight this villain. Ranma's martial arts skills combined with the Sailor Scouts' magical powers would make for an interesting battle. They might have to learn to work together despite their very different fighting styles and personalities.
It could be about Link ending up in Equestria and teaming up with Twilight Sparkle to fight a new evil that threatens both their worlds. Maybe Ganondorf has found a way to enter Equestria and is causing chaos, and Link uses his combat skills while Twilight uses her magic to drive him out.
One interesting plot could be that the Sailor Guardians are on a mission to a world similar to Naruto's. There, they meet Naruto and his friends. Naruto is initially confused by their strange powers but quickly realizes they can help fight a common enemy. Maybe an evil force from the Sailor Moon universe has teamed up with Orochimaru. The Sailor Guardians' magic combined with Naruto's ninja skills could make for some epic battle scenes.
One interesting plot could be that the villains from both universes team up. The Akatsuki from Naruto and the Dark Kingdom from Sailor Moon might join forces to collect powerful artifacts. Naruto and the Sailor Scouts would then have to put aside their differences in fighting styles and powers to defeat this new, combined threat. They could learn from each other's combat techniques. For example, Naruto might teach the Scouts about his shadow clone jutsu, while Sailor Moon could show Naruto how to use the power of love and friendship in a more direct way to boost his power in battles.
Well, perhaps Voldemort teams up with some of Sailor Moon's villains. Harry and Sailor Moon then have to put aside their differences in fighting styles and beliefs to take on this combined evil. The Sailor Scouts could teach the Hogwarts students about their powers of love and friendship, which could be a new concept in the wizarding world. And Harry could show them how to use magic in more creative ways in battle.
One possible plot could be that Naruto and his friends are transported to the Sailor Moon universe. Naruto's chakra could be seen as a similar power to the Sailor Scouts' magic. They could team up to fight a common enemy, like an evil force that is draining both the chakra and the magic energy in both universes. Naruto's determination and the Sailor Scouts' love and justice - driven powers could combine in unique ways to defeat the foe.
Maybe the NCIS team stumbles upon a strange artifact that has the power to open portals to different dimensions. Unknowingly, they activate it and end up in the world of Sailor Moon. There, they meet Sailor Moon and her friends who are in the middle of a battle against the forces of evil. The NCIS agents, with their knowledge of forensics and combat skills, offer their help. In return, the Sailor Scouts teach them about the magic and powers in their world. Together, they form an unlikely alliance to defeat the common enemy.
A plot might involve Sailor Moon herself getting lost in the Underworld. As she tries to find her way back, she discovers that there are some similarities between the magic in the Underworld and her own powers. She could meet a character in the Underworld who has a connection to her past or her future. Together, they start to uncover a mystery that links the two worlds and has the potential to either save or destroy both.