One possible plot could be that a rare lemon tree grows in the Forbidden Forest, and it's guarded by a dragon. Harry and his friends need to get a lemon from this tree for a special potion to cure a magical illness. So they have to figure out how to get past the dragon.
The plot might be centered around a new spell that involves lemons and dragons. A young wizard in the Harry Potter universe discovers that by combining the essence of a dragon with a lemon, a powerful spell can be created. This leads to a race among different wizards to either use this spell for good or evil, with Harry and his friends trying to stop the bad guys from misusing it.
Perhaps Alice is a new student at Hogwarts who brings with her a strange charm in the form of a lemon. Harry, being curious, gets involved with her and the mystery of the lemon. It could turn out that the lemon is a key to an ancient wizarding secret. As they explore the secret together, they face many challenges and also develop a romantic relationship. Their journey might involve solving puzzles, facing dark wizards who also want the lemon's power, and ultimately saving the wizarding world in a new and unexpected way.
Well, it could start with Harry finding an injured dragon. Out of compassion, he decides to take care of it. He might use his magic skills and knowledge from Hogwarts to nurse it back to health. As the dragon grows, he has to find ways to keep it under control. He could face problems like the dragon's growing appetite and its natural instinct to be wild. Maybe he even has to enlist the help of his friends, like Ron and Hermione, to keep his dragon - raising a secret from the school authorities.
Well, it could also be that the dragon is a misunderstood creature. Harry enters the dragon's world not as an enemy but as a friend. He discovers that the dragon has been misjudged by the wizarding community and tries to bridge the gap between the two species. This could lead to a whole new adventure where Harry uses the dragon's power in a positive way against the dark forces.
One possible plot could be that there is a prophecy about a dragon rider saving the wizarding world. Harry, being the hero he is, stumbles upon a dragon that chooses him as its rider. Along the way, he has to train both himself and the dragon to fight against a new dark force that the regular magic of the wizarding world can't defeat. He might face opposition from the Ministry of Magic at first because having a dragon rider is unheard of and seen as dangerous. But as the threat grows, they come to realize that Harry and his dragon are their best hope. Harry would have to learn new spells and magic related to dragon riding and also deal with the bond between him and his dragon, which is both a source of strength and vulnerability.
The plot could start with Harry finding a wounded dragon in the Forbidden Forest. He heals it with his magic, and the dragon becomes his loyal friend. Together, they explore hidden parts of the wizarding world that are only accessible with the dragon's flying abilities. They might discover ancient magic spells or artifacts that are crucial in solving some mystery in the wizarding world.
A possible plot could be that a baby dragon is found by a group of first - year students. They initially think it's just a strange lizard - like creature. But as it grows and starts to show dragon - like features, they realize what it is. They then try to find a way to get it back to its natural habitat, which might be in Romania where Charlie Weasley works with dragons. Along the way, they learn a lot about different types of dragons and the importance of protecting magical creatures.
In this fanfic, perhaps Harry's heritage as the 'Son of the Dragon' is a secret that Voldemort wants to use for his own evil purposes. So, Harry has to not only deal with the regular threats in the wizarding world but also this new danger related to his unique identity. And he might have to seek help from some unexpected allies, like the dragons themselves.
In a more comical plot, the lemon could be a mischievous magical object that keeps causing chaos in Petunia's house. It might make things float or turn into strange creatures. Petunia, being the uptight person she is, has to deal with this lemon - induced mayhem while also trying to keep up appearances in front of the neighbors. This could lead to some really funny situations and a change in her attitude towards the strange and magical over time.
The plot could be that Lily Luna stumbles upon a lemon - enchanted diary. As she reads it, she realizes it was written by an old Hogwarts student who had a special connection with lemons in magic. The diary reveals secrets about hidden passages in Hogwarts that are only accessible when one holds a lemon charm. Lily Luna then decides to explore these passages with her friends, facing various magical challenges along the way.
The plot could be that Madam Rosmerta uses lemon as an ingredient in a potion she's secretly making. She's making this potion to help protect the wizarding community around Hogsmeade from a new dark magic threat. The lemon is a key component as it has the ability to neutralize certain dark spells. Harry and his friends might stumble upon her making this potion and get involved in the process.