The plot might involve a Muggle - born wizard who discovers that his or her family's power lines have some sort of latent magical property. This discovery attracts the attention of both the Ministry of Magic and some dark forces. Harry Potter gets involved to protect the Muggle - born and their family. Along the way, they learn that the power lines were somehow enchanted long ago, and they have to figure out how to either remove the enchantment or use it for good, all while fending off the attacks of the dark forces.
A fanfiction plot could center around a new spell that is affected by high - voltage power lines. When Harry tries to use this spell near a power line, it has unexpected and powerful results. This attracts the interest of some magical researchers who want to study the interaction. However, there are also those who want to use this newfound connection for evil purposes. Harry and his friends must decide whether to help the researchers or keep the knowledge hidden to prevent it from falling into the wrong hands, and also deal with the strange effects the power lines have on their magic.
I'm not sure there are a lot of direct connections between Harry Potter and high - voltage power lines in the original series. But in fanfiction, one could imagine a scenario where the magic of Harry Potter interacts with the electricity from high - voltage power lines in a modern - day, Muggle - influenced setting. For example, perhaps a spell goes wrong and causes some sort of electromagnetic interference with the power lines, leading to strange happenings in the Muggle world that the wizards then have to fix to keep the Statute of Secrecy intact.
The plot could be that fem Harry Potter is a secret Power Ranger fan in the wizarding world. One day, a strange magical event causes a rift between the two worlds and some Power Rangers end up in Hogwarts. Fem Harry Potter then reveals her knowledge and love for the Power Rangers. She helps them navigate the wizarding world while also learning from them how to be a Power Ranger. Eventually, they find out that there is an evil force that wants to destroy both the wizarding world and the world of the Power Rangers. So, they train together, combining magic and Ranger powers, and go on a quest to defeat this evil force.
One possible plot could be that the Ghost Rider's power somehow gets intertwined with the wizarding world of Harry Potter. Maybe the Ghost Rider's hellfire has an effect on dark magic, either nullifying it or causing some sort of unexpected reaction among the dark wizards. For example, Voldemort's Death Eaters might be terrified of the Ghost Rider's presence, as his power is so different from anything they've encountered in the wizarding world.
Maybe Harry is on the run from some dark forces and he finds the power station as an unexpected hiding place. He could be using the complex structure and machinery of the power station to evade detection, perhaps with some magical twists like using spells to blend in with the electrical currents or machinery.
One possible plot line could be that Harry Potter is magically transported to Minato's world and has to learn ninja techniques to get back. Along the way, he combines his magic with Minato's skills and becomes a unique force. Another could be that Minato's spirit somehow enters Harry's body, and Harry has to deal with new memories and abilities while still facing the challenges in his own world.
In this fanfiction, Harry Potter as High King could bring Hogwarts - like education to Skyrim. He would establish schools of magic where the Nords and other races could learn spells. He'd also use his knowledge of magical creatures to better handle the ones in Skyrim, like trolls and giants. He might even form an alliance between the wizards of his world and the races of Skyrim to face common enemies.
One possibility is that Harry grows up learning the elven ways. He might become an exceptional magic user among the high elves, mastering their unique spells and skills. For example, he could learn their advanced archery combined with magic. His connection to the wizarding world might also bring new elements to the elven society, like introducing some wizarding inventions.
One possible plot line could be that Fem Harry Potter has dreams about Enkidu. These dreams inspire her to seek out more information about him. She then discovers a hidden library in Hogwarts that contains books about ancient Mesopotamian mythology. As she reads more about Enkidu, she starts to develop new spells based on his powers.
In some 'Harry Potter is a pilot' fanfictions, there could be a plot where Harry has to transport magical creatures by air. He'd have to figure out how to keep them calm and safe during the flight. Also, perhaps he teams up with other wizard pilots to form a sort of magical air force to protect the wizarding world from threats in the air.
A cool plot might be that Voldemort somehow discovers the existence of Monster High and plans to use the unique powers of the monsters there for his own evil purposes. So, Dumbledore sends a group of Hogwarts students, including Harry, to Monster High to warn them and form an alliance. The Monster High students, led by Frankie Stein and Draculaura, join forces with the Hogwarts students. They then have to use a combination of magic and monster abilities to stop Voldemort's plan, which could involve some sort of dark spell that would not only affect the wizarding world but also Monster High if successful.