A possible plot could be that there is a dark magic spreading across the land that is affecting the relationship between the people and the knights. Arthur and Merlin, as brothers united, must find the source of this magic and stop it. Along the way, they have to overcome personal differences and doubts. Merlin might be hesitant to use his magic too freely in front of Arthur at first, but as they face more challenges, they learn to trust each other completely.
One idea could be that they discover a long - lost magic artifact together that has the power to unite all the kingdoms in peace. Another could be that they face a common enemy who is threatening Camelot and they have to combine their skills, Arthur's leadership and combat abilities and Merlin's magic, in a new and unexpected way.
Perhaps they find out that they have a secret family connection that goes beyond just being brothers. This could lead to a whole new adventure as they explore their shared heritage. They might also have to deal with a prophecy that only they can fulfill together, which could involve traveling to far - off lands and meeting strange new characters.
They could start by having more heart - to - heart conversations. For example, Arthur could share his insecurities about being a king and Merlin could talk about his fears regarding his magic. This would deepen their bond.
One idea could be that Merlin has to hide his magic even on his wedding day to Arthur. Maybe there are some old enemies who try to disrupt the wedding, and Merlin uses his magic subtly to protect everyone without being detected. Another plot could involve Arthur trying to incorporate some of Merlin's commoner traditions into the grand royal wedding, causing some comical and heartwarming moments among the nobility.
One idea could be that Merlin, Arthur, and the Smurfs team up to save their respective kingdoms from a common dark magic threat. The Smurfs' magic combined with Merlin's could create a powerful force against the enemy. Another plot could involve Arthur getting lost in the Smurf village and learning their simple and happy way of life, which then influences his rule in Camelot.
One idea could be that they face challenges from the court. Some nobles might oppose their union due to Merlin's humble origins. Another could be that Merlin's magic becomes a public knowledge after the marriage, and they have to deal with the reactions of the people. A third idea is that they go on a quest together as a married couple to find a magical artifact that can help protect Camelot from a new threat.
Well, perhaps Draco, in the role of Merlin, has a special connection to the magical creatures that he uses to help Harry. Harry, as Arthur, is trying to unite the different factions of the wizarding world. Draco's knowledge of magic, similar to Merlin's, allows him to create magical artifacts or spells that assist Harry in his quest for unity. And there could be a love story involved too, like Guinevere and Arthur, but in the context of the wizarding world with some other character and Harry.
One idea could be that in a moment of extreme danger, Merlin and Arthur share a kiss as a way of saying goodbye, not realizing they'll both survive. It could be a spur - of - the - moment, passionate kiss that catches them both by surprise. Later, they have to deal with the newfound feelings this kiss has unearthed.
One idea could be that Merlin accidentally casts a time - travel spell and takes Arthur to the future. There, they see a world where magic is accepted and Camelot has become a legend. Another could be Arthur traveling back in time to meet a young Merlin before he came to Camelot. This would change their initial meeting dynamic.
One plot idea could be that they have to overcome the initial shock and resistance from the kingdom. Since it's an unconventional relationship in their world, they face challenges from the court, nobles, and even some of the common folk. But through their unwavering love and some heroic deeds, they gradually win people over. Another idea is that a magical curse forces them to get married to break it, and in the process, they discover their true feelings for each other.
One interesting plotline could be their journey to discover their true family history. Since they are brothers in this fanfiction, there might be secrets about their parents or heritage that they uncover together. Another could be them facing challenges as brothers, like one getting into trouble and the other having to save him. For example, Arthur might get captured and Merlin uses his magic to rescue him, strengthening their bond as brothers in the process.
One great storyline could be them growing up together secretly as brothers. They might face challenges like hiding their true relationship from Uther. Another could be that as brothers, they have a special bond that allows them to communicate without words, which helps them in battles and in dealing with court politics. A third idea is that they discover they are brothers through some magical revelation and then have to re - evaluate their entire relationship and how they fit into Camelot's future together.