Well, a plot could involve her using her femininity to her advantage in dragon - related situations. She could have a special connection with a female dragon that leads to new forms of communication or abilities. Also, her upbringing by dragons might give her a different perspective on the relationship between Vikings and dragons. This could lead to her trying to broker peace between the two in a way that's different from the male Hiccup in the original.
One plot idea could be that Hiccup, as a female, has unique ways of bonding with the dragons. For example, she might use her more empathetic nature to understand their needs better than in the original story. Another could be that she faces different challenges in the Viking society which is often male - dominated. Maybe she has to prove herself even more to be accepted as a dragon rider.
In a fanfiction like this, a great plot idea would be that the female Hiccup discovers a long - lost dragon lair while being raised by dragons. This lair could hold secrets about the origin of dragons and their connection to the Vikings. As she explores it, she has to use her skills learned from both the dragons and her Viking heritage. She might also encounter a new type of dragon that is more powerful and intelligent than the others, and she has to figure out how to interact with it. This could lead to a whole new adventure and change the way the Vikings view dragons forever.
One idea could be that Hiccup, after turning into a dragon, has to learn to communicate with his old dragon friends in a new way. Since he now experiences the world as a dragon, he might discover new dragon abilities and secrets that were hidden from him before. Maybe he has to find a way to turn back, but in the process, he helps the dragon world solve a big problem, like dealing with a new and dangerous enemy.
In a fanfiction, Hiccup could be faced with a situation where the other gods are jealous of his status as the God of Dragons. They conspire to strip him of his powers. Hiccup then has to rely on his friends, both human and dragon, to regain his powers. He might go on a quest to find ancient artifacts that were used to first bestow the God of Dragons title upon him. This would involve a lot of adventure, battles, and self - discovery.
One idea could be that Hiccup discovers a new type of dragon with unique abilities. For example, a dragon that can change its color to blend in with its surroundings. This could lead to a whole new adventure as he tries to understand this dragon and protect it from those who might want to use it for bad purposes.
One idea could be that Hiccup discovers a new language that only the rarest of dragons understand, allowing him to communicate with a long - lost and extremely powerful dragon species. This could lead to him having to make difficult decisions about whether to share this knowledge with Berk or keep it a secret to protect the new dragons.
One idea could be that Eragon discovers unique dragon magic only accessible to those raised by dragons. For example, he might be able to communicate with all dragons on a deeper level, not just his own. Another plot could involve him facing challenges from dragon - haters who fear his special bond with the dragons. They might try to break the bond or harm him.
There might be a fanfiction where Hiccup is raised not just by Toothless but by a whole group of different dragons. Each dragon teaches him different skills. Some dragons could teach him about flying techniques that are different from what he already knows, while others might show him how to communicate in more complex ways with dragons.
Another plotline might involve the twins' struggle to fit into human society. After being raised by dragons, they would have different values and behaviors compared to normal humans. This could cause conflict when they try to interact with their own kind. They might face prejudice from those who don't understand their dragon - influenced ways, but also find a few who are intrigued and want to learn from them.
One interesting story could be about Hiccup's adventures in a new land with his dragons that he discovers by accident. Maybe he finds a hidden dragon lair with a rare breed of dragons.
One interesting plot idea could be that the dragons start to communicate with Hiccup in a more complex way through their listening skills. For example, they might be able to understand his unspoken fears and desires, and then help him in ways he never expected, like leading him to a hidden treasure that only they knew about because of their unique perception.
A really interesting plot could be a time - travel one. Maybe Female Hiccup travels to Jack Frost's past or vice versa, and they have to adjust to the different time periods while also falling in love. Or perhaps there's a plot where they are both tasked with protecting a special, magical artifact that has the power to change the balance of their worlds, and they have to overcome their differences to succeed.