One possible plot twist could be that Draco discovers a hidden power within himself that gives him the courage to stand up to Voldemort. Maybe it's an ancient magic that his family has long forgotten about. This newfound power could make him a real threat to Voldemort's plans.
Draco's character could develop from a scared boy following his family's dark path to a brave young man. Standing up to Voldemort would force him to face his fears and make his own decisions. He might start to question the values he was taught and find new ones based on courage and justice.
Another plot often seen is Hermione challenging Draco in academic competitions. Since she's brilliant and he's often overconfident, she proves him wrong in areas like potions or charms, which really gets under his skin. It's a great way to show her intelligence and confidence.
A really interesting fanfic is 'Hermione Against Draco'. In this one, Hermione stands up to Draco during a Potions class. He tries to undermine her skills, but she shows him that she's just as good if not better. There's also 'Facing Draco' where Hermione faces Draco's attempts to get her in trouble with Snape. And 'Hermione's Courage' shows her standing up to Draco's group of Slytherin cronies when they try to corner her in a corridor.
Well, Draco standing up to his parents could lead to a lot of internal family drama. His parents might be shocked and try to bring him back into the fold. But Draco, being determined, could resist. He might leave his family home and start a new life on his own. He could also use his knowledge of the dark arts that he learned from his family in a more positive way, to fight against the real evil in the wizarding world.
Often, it creates a more complex relationship. Take 'The Unlikely Bond' for instance. When Hermione stands up to Draco, he becomes both intrigued and a bit angry at first. But over time, this confrontation becomes the starting point of a relationship that is full of tension but also mutual admiration. In other fanfics such as 'Hermione's Impact', it causes Draco to reevaluate his own beliefs and actions, which in turn affects how he relates to Hermione.
One key moment could be when Hermione uses her quick wit to verbally outmaneuver Draco in a public setting. For example, in the Great Hall, she might refute his snide remarks about Muggle - borns with facts about the great contributions of non - pure - blood wizards. Another moment could be when she physically stands in his way to prevent him from bullying a younger student. This shows her courage and determination to oppose Draco's bullying ways.
One common theme is the idea of redemption for Draco. By standing up for Hermione, he is often shown as breaking away from his Slytherin - bred prejudices, which is a form of self - improvement.
You can try searching on fanfic platforms like Fanfiction.net or Archive of Our Own. Just type in 'Draco stands up for Hermione' in the search bar, and it should bring up relevant stories.