Well, perhaps Harry is frustrated with Dumbledore's secrets. Maybe he's angry about being kept in the dark regarding his own fate or the danger around Hogwarts. So he decides to confront Dumbledore and let out all his pent - up feelings.
The main characters would be Harry and Dumbledore for sure. But it's possible that some of the other Hogwarts teachers, like McGonagall, could also be involved. She might be a witness to the confrontation, or she could be someone Harry goes to for advice before or after he tells Dumbledore off. Additionally, Snape might also play a role, as his relationship with both Harry and Dumbledore was quite complex.
Well, perhaps Dumbledore has some dark secret and believes Harry is the key to it. He might kidnap Harry to keep him away from Voldemort in a very unorthodox way. Maybe he wants to train Harry in isolation for some super - powerful magic that he doesn't want Voldemort to find out about.
One possible plot could be that in a battle against a powerful dark magic, Harry accidentally casts a spell that links him to Dumbledore. As a result, he starts to experience Dumbledore's memories and emotions, which gives him new insights into the wizarding world's history and secrets.
In the 'harry tells cho chang off fanfic', it could be that Cho Chang has been too clingy or possessive. Harry, who values his freedom and friendships, decides to tell her off. He might say that he needs space to focus on more important things like fighting against Voldemort and protecting Hogwarts. And he could also mention that her behavior is affecting his ability to do what he needs to do.
Well, it could be that Sakura makes a really bad decision during a mission, like endangering the whole team because she was being too overconfident. Naruto, who has grown tired of her reckless behavior, tells her off. He might say things like 'Sakura, you can't keep acting this way. You're putting all of us at risk!'
One possible plot could be that Naruto has finally had enough of Sakura's constant nagging or her one - sided focus on Sasuke. So he tells her off in a moment of exasperation, perhaps pointing out how she's been neglecting their friendship or the team spirit in pursuit of Sasuke.
Perhaps Sasuke has been ignoring Sakura's feelings for a long time in the fanfiction. Sakura decides she's had enough of his cold attitude. She tells him off for not being more considerate of her emotions. She might bring up all the times she's been there for him, and how he just brushes her off, and she demands some respect.
I'm not sure if there is a specific 'Harry Potter Dumbledore Stealing Fanfiction' out there. However, if there were, the plot could potentially involve Dumbledore stealing something important like a powerful magical artifact that he believes is necessary to protect Hogwarts or the wizarding world from a great evil, but his actions are misinterpreted by the characters in the fanfiction.
One reason could be a misunderstanding. Maybe Harry discovers some actions of Dumbledore that seem wrong at first glance, like the way he's been handling secrets about Harry's past or Hogwarts' safety. For example, Dumbledore's decision to keep Harry in the dark about certain prophecies might make Harry feel betrayed and lead to a conflict.
One possible plot could be that Dumbledore wants Harry to take on a dangerous but crucial mission earlier than in the original story. He might be desperate because he sees a dark threat approaching faster and believes only Harry has the unique power to stop it.