A plotline might involve Adrien's father being in a creative slump. Adrien, with his fresh perspective, helps his father break through it. He could introduce his father to new ideas, new people, or new places that reignite his father's creativity. Or perhaps Adrien's father has made some enemies, and Adrien has to use his diplomatic skills to smooth things over and protect his father.
One possible plotline could be that Adrien's father is facing a financial crisis, and Adrien uses his intelligence and charm to attract investors or find new business opportunities. Another could be that his father is ill, and Adrien takes on more responsibilities at home and in his father's business to keep things running smoothly.
In a 'Adrien helps his father' fanfiction, Adrien might use his unique skills or knowledge to aid his father. For example, if Adrien has some superpowers or special talents in the original story, he could apply them to solve his father's problems. He could be helping his father to fix a family issue, like mending a broken relationship within the family. Or he could be physically helping his father, like if his father was injured and Adrien took care of him. There are so many possibilities.
One possible plotline could be that Harry is under some sort of dark magic influence or curse that forces him to aid in Voldemort's resurrection. Maybe a powerful dark wizard has manipulated Harry's mind.
One possible plotline could be that Harry discovers he is in this unexpected mpreg situation and is initially terrified and confused. Snape, despite their past differences, steps in to help because he realizes Harry has no one else to turn to. Snape could use his knowledge of potions to ease Harry's physical discomfort during the pregnancy.
One possible plotline could be that they initially struggle to adapt to each other's lives. Adrien, in his dad's body, might have to deal with the pressures of running a business, while his dad in Adrien's body has to handle school and social life. This could lead to a lot of comical misunderstandings.
One plotline could be that Adrien discovers his cat eyes are a sign of a special power he has. He then has to learn to control this power and keep it a secret from those around him.
Another plotline could be that Mace is facing some sort of political trouble within the Jedi Order. Anakin, with his unique position and skills, steps in to help Mace clear his name or resolve the situation. For example, Anakin might use his relationship with Palpatine to uncover some secrets that can exonerate Mace. This would involve a lot of political intrigue and character - driven drama.
He might start by taking over some of his father's business tasks, like handling paperwork or scheduling meetings.
One possible plotline could be that Adrien gets rejected by Ladybug, and this makes him question his self - worth. He might start to withdraw from his superhero duties for a while, thinking that he's not good enough. His friends notice the change in him, but he doesn't want to talk about it at first. Eventually, he realizes that his identity as Chat Noir is more than just being Ladybug's partner and he starts to focus on protecting Paris in his own right.
A possible plotline might involve a magical experiment. Harry, being the curious wizard he is, participates in an experiment that has unforeseen consequences on the fabric of time and family relations. As a result, he becomes Hermione's father. The story could then follow how Hermione discovers this truth and how it affects her relationship with Harry. It could also explore how their friends like Ron react to this strange new family dynamic in the wizarding community.
One plotline could be that the de - aged Voldemort, now in a more innocent state, tries to make amends for his past actions towards Harry. He might use his knowledge of magic to protect Harry from other threats in the wizarding world. Another could be that Harry initially resists the idea of Voldemort as a father - figure but slowly comes to understand that this new Voldemort is different. And then there's the plotline where the wizarding world is in chaos because of this strange relationship, with some people believing it's a dark plot while others see it as a chance for redemption.