Perhaps in this fanfiction, Harry Potter is recruited by the queen to solve some magical mysteries within the palace. He could use his knowledge of the wizarding world to uncover secrets that are plaguing the monarchy. For example, there might be a cursed object in the palace that is causing strange happenings, and Harry is the only one who can find and break the curse.
In this fanfic, it could be that the wizarding world and the Muggle royalty have decided to collaborate more closely. Harry, being a well - known and powerful wizard, is sent to work for the queen. He might introduce some magic - based solutions to problems like security or even helping with diplomatic relations. For instance, he could use a spell to make sure important diplomatic meetings go smoothly without any eavesdropping or disruptions.
One possible plot could be that the Queen is in danger from dark wizards who want to take over the Muggle government. Harry, using his skills from Hogwarts, discovers the plot and uses magic to protect the Queen. He might use spells like Protego Maxima around Buckingham Palace.
Well, it could be about the Queen of England being a secret witch and having a connection to the wizarding world of Harry Potter. Maybe she helps Hogwarts in some way during a crisis, like providing a safe haven on the castle grounds that are protected by magic and Muggle secrecy charms at the same time.
One possible plot could be that Harry, after facing so much darkness in the wizarding world, is suddenly whisked away into the world of Oliver Queen. Oliver, seeing Harry's plight and his potential, decides to adopt him. Harry then has to adjust to a new life with Oliver, learning archery and self - defense skills from him. He might also bring some of his magic into Oliver's world, helping him in his fight against crime in a very unique way.
One possible plot could be that the Queen of England discovers the wizarding world through Harry Potter. Maybe she visits Hogwarts and is amazed by the magic there. She could then use her influence in the Muggle world to help keep the wizard - Muggle relations a secret in a more official way.
It could be a dark wizard who wants to disrupt the new relationship between the wizarding world and the queen. This wizard might see Harry's position as a threat to his own plans of taking over the Muggle world starting from the monarchy.
In this fanfiction, perhaps Harry Potter is brought into NCIS because there are rumors of a wizard - made weapon being used in crimes. He would have to navigate the non - magical world of law enforcement while also keeping his own magical identity a secret. His owl, Hedwig, could be used to send messages in a discreet way that NCIS could benefit from. He might also introduce some of his wizard friends, like Hermione, to help with research using magic - enhanced techniques.
Well, it could be that the Queen has a special connection to the wizarding world in this fanfiction. Perhaps she has been secretly informed of Harry's bravery and selflessness all along. And as a symbol of the British monarchy, she knights him to show that the Muggle and wizarding worlds can have a positive relationship. So, she bestows this honor on Harry.
Perhaps Harry Potter is summoned to Queen Elizabeth's court by a dark wizard who wants to use Harry's fame to gain power. Harry has to find a way to escape this situation and also protect the queen from the dark wizard's plans. He might use his knowledge of magic and his Gryffindor courage to outwit the dark wizard and return to his own time, leaving behind a legend in Queen Elizabeth's court.
Well, the plot could involve Harry Potter, who is from the magical world, meeting a die - hard Queen fan. Maybe they cross paths at a concert in the Muggle world. The Queen fan might introduce Harry to the amazing music of Queen, and Harry, being intrigued, starts to fall for this person. Their relationship could face challenges as Harry has to balance his magical duties and this new Muggle relationship.
Perhaps in this fanfic, the Ministry of Magic is under new management that is more closely allied with the Muggle government. Harry Potter and his friends are then given special tasks by the Queen (or her representatives) to use magic to improve the country. This could include using magic to clean up polluted areas, or to help in times of natural disasters. At the same time, they have to deal with internal wizarding politics that might oppose such close cooperation with the Muggles.