Perhaps in a fanfic, Saturn could be a place where Voldemort had secretly hidden a part of his soul. Harry, following some cryptic clues, travels to Saturn to find and destroy this piece. Along the way, he teams up with some Saturn - based magical creatures who help him in his quest against the dark forces.
Another plot could involve Harry being transported to Saturn in a magical accident. There he finds a society of magical beings that have different forms of magic compared to those on Earth. He has to learn their ways to find a way back home while also facing challenges from some of the more hostile beings.
A possible plot for Pokemon Dawn and Saturn fanfiction is a story where Saturn, who is usually associated with Team Galactic, has a change of heart after meeting Dawn. He starts to question the motives of his team and decides to help Dawn protect the Pokemon from Team Galactic's more harmful plans. They could go on a journey to find evidence to expose the true intentions of the higher - ups in Team Galactic.
An interesting plot could be that a dark entity from another dimension is trying to collect powerful artifacts from both the Sailor Moon and Harry Potter universes. This entity targets the Silver Crystal and the Deathly Hallows. Sailor Saturn, Mamoru, and Harry have to work together to stop it. Harry uses his wizard skills, Mamoru his fencing and Tuxedo Mask powers, and Sailor Saturn her Sailor powers. Along the way, they face many challenges and have to learn to trust each other despite coming from different worlds.
One idea could be Harry getting involved in Gremory family politics. He could use his unique skills and knowledge to help resolve internal disputes within the family.
Well, a plot could revolve around Harry accidentally awakening the mummy and then having to deal with the chaos that follows. The mummy might start causing strange things to happen in the town, like making the water turn to sand or the plants wither. Harry then has to find a way to reverse the mummy's awakening or at least control its actions. He could search for an old spell book that might have the answers.
One idea could be that Harry, being a playboy, gets involved in a series of high - society parties and romances. He might meet a mysterious woman who challenges his playboy ways and makes him question his lifestyle.
For a Slenderman Harry Fanfic, a great plot might be that there's a prophecy about Harry and Slenderman. The prophecy states that only Harry can defeat Slenderman in a final battle of magic. So, Harry starts to have strange visions of Slenderman and has to train himself in new and dangerous forms of magic to be able to stand a chance. Along the way, he meets some new magical creatures that are either helping or hindering his quest. Also, the Ministry of Magic doesn't believe Harry about Slenderman at first, thinking it's just another one of his wild stories, which adds to the drama and difficulty of his task.
One plot idea could be that Harry discovers a hidden alchemical library in Hogwarts that has been long forgotten. In this library, he finds ancient texts that lead him on a quest to create a powerful elixir that can heal any wound. Another idea is that Harry teams up with an alchemist from a different magical school to compete in an alchemical tournament against dark wizards who want to use alchemy for evil purposes.
One idea could be that Harry discovers a hidden world of shipgirls and has to team up with them to protect the seas from a mysterious evil force. Another could be a story where Harry gets transported into the shipgirl universe and has to adapt to their way of life while also using his own unique skills to help them in battles. Maybe there could be a plot where a shipgirl and Harry fall in love and face various challenges together, like dealing with different cultures and expectations between their two worlds.
One idea could be Harry discovers a hidden power within the Grimm world that no one else has. This new power could lead him on a journey to uncover secrets about the origin of the Grimm. Another idea is Harry befriends an outcast Grimm creature and together they face the prejudices of the Grimm society.
One idea could be a story where Harry and Krum team up to solve a mystery that involves dark magic in both their countries. They use their unique skills and knowledge to outwit the dark forces.