Perhaps there's a plot where Snape is framed for a crime he didn't commit, and Hermione is the only one who believes in his innocence. She sets out to prove his innocence by investigating the real culprit. Along the way, they have to work together, hiding from the Ministry of Magic and other dark forces. Snape starts to see Hermione in a new light, and Hermione gains a deeper understanding of Snape's character and the politics within the wizarding world.
One possible plotline could be that Harry accidentally breaks a very important magical item in Snape's classroom. Snape, in his usual strict manner, decides on a rather archaic form of punishment like spanking as a way to teach Harry a lesson about responsibility. But it's all done in a way that is more comical than mean - spirited, and Harry learns from his mistake in the end.
One possible plotline could be that Harry discovers Snape's true motives much earlier. Maybe he stumbles upon Snape's memories that show his complex relationship with Harry's mother. This new understanding makes Harry see Snape in a different light. They start to have secret meetings where Snape teaches Harry advanced magic, away from the prying eyes of others at Hogwarts. Their relationship gradually evolves from one of enmity to an unspoken bond.
One possible plotline could be Snape revealing the truth to Harry in a moment of crisis. Maybe when Harry is about to face Voldemort alone, Snape steps in and tells him the truth, giving Harry a new motivation to fight.
Perhaps in the fanfiction, there is a prophecy that Snape will cause great harm to Hogwarts. Harry, being the hero, feels it's his duty to stop Snape. He starts to gather evidence of Snape's wrongdoings, which are not obvious at first. As he digs deeper, he uncovers a web of lies and deceit that Snape has spun. This leads to a confrontation where Harry uses his magic skills and the loyalty of his friends to destroy Snape's influence over the school and the other wizards. Snape might have been planning to use dark magic to take over Hogwarts, and Harry is the only one who can prevent it.
One possible plotline could be that Harry says something unkind to Hermione during a heated argument about a school project. This makes Hermione feel betrayed and sad. But later, Harry realizes his mistake and tries to make it up to her.
A plotline could be that Snape is framed for a crime he didn't commit, and Harry, who trusts him, is the only one who believes in his innocence. Harry then sets out to prove Snape's innocence, facing many obstacles and enemies in the process. This would be a great twist on the typical relationship between them in the original series.
One possible plotline could be that Hermione is forced to work under Snape in a special project. She initially resists his strict methods but gradually comes to understand his perspective and submits to his more experienced guidance in potions or some other area of magic. For example, Snape might be in charge of a top - secret research project and Hermione, with her brilliant mind, is chosen to assist. Through their interactions, she realizes that his seemingly harsh demands are actually aimed at achieving the best results.
One possible plotline could be that Harry discovers Snape's past and the reasons behind his harsh behavior. For example, Harry might find out about Snape's love for his mother. This new understanding could lead to an initial truce between them. They could start by working together on a difficult potion in the classroom, with Harry being more patient and Snape being less critical. As time passes, they might find themselves sharing their thoughts about the wizarding world's future and realizing they have more in common than they thought.
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 possible plotline could be that Ron and Hermione are influenced by dark magic or a powerful enemy who manipulates them into betraying Harry. For example, they might be under the Imperius Curse. Another could be that they misunderstand Harry's actions or intentions, leading them to believe he has gone to the dark side, so they turn against him in an attempt to 'save' the wizarding world. Maybe they are jealous of Harry's fame and power growing too much, and this envy festers until they decide to betray him.