Perhaps Hiccup is on a journey to explore new lands and stumbles upon Elsa's frozen kingdom. He helps Elsa overcome some of her fears about her powers that have resurfaced. In the process, they develop feelings for each other. Once Elsa becomes pregnant, they must deal with the cultural shock of their two very different worlds. Hiccup has to introduce Elsa to the Viking way of life, while Elsa tries to make Hiccup understand the elegance and traditions of her kingdom. They also have to figure out how their baby will inherit and control both dragon - related and ice - based powers.
Their relationship might start with curiosity. Hiccup would be curious about Elsa's ice powers and Elsa about Hiccup's connection to dragons. As they interact more, they start to respect each other's abilities and personalities. This mutual respect turns into friendship, and then gradually into love. The news of the baby would strengthen their bond as they now have a shared future to look forward to. They would support each other more, with Hiccup protecting Elsa during her pregnancy and Elsa using her powers to help Hiccup in his adventures.
One possible plot could be that Hiccup, while on a journey with Toothless, somehow gets transported to Elsa's world. He stumbles upon Elsa as she is trying to control her powers in a difficult situation. Hiccup, with his experience dealing with dragons, offers her a different perspective on handling her powers. They gradually grow closer as they share their stories and in a moment of deep connection, they share a kiss.
Well, perhaps the fanfiction could be about how the baby brings Anna and Elsa even closer together. Since they already have a strong bond, the baby could be like a little miracle that makes their family complete. The story could show their daily life taking care of the baby, like singing lullabies and teaching the baby to walk, with a lot of cute and heart - warming moments.
One possible plot could be that Elsa and Hans, after many challenges and reconciliations, decide to start a family. Their baby might inherit Elsa's ice powers in a unique way, like being able to create ice sculptures just by touch. And they would have to protect the baby from those who might fear or want to use the baby's powers for their own gain.
Perhaps the story could focus on how their friends react to the news. For example, Anna might be super excited and start knitting baby clothes, while Olaf could be confused about how a baby is made but still be very eager to be a playmate. The plot could also involve Elsa and Jack having to protect their unborn baby from some sort of threat in their magical realm.
A plot could involve Elsa's ice powers acting up during her pregnancy. Hiccup, being from a more technological and dragon - friendly world, tries to find ways to help her control it. They might seek the help of Toothless and other magical creatures in their world. Maybe they face opposition from some of their people who are not happy about their union, especially with a baby on the way. But they stand strong together and prove that love can bridge any gap.
The fanfiction could focus on the baby having some special abilities. Since Hiccup and Astrid are both strong characters, their baby might inherit unique traits. It could be able to communicate with dragons in a special way. And the story could revolve around how they discover and nurture these abilities while also trying to keep their baby safe and normal within their community.
One possible plot could be that Jack, with his carefree and fun - loving nature, and Elsa, with her strong and protective side, discover they are having a baby. They could face challenges like how to combine their two very different worlds. Jack's world of eternal winter playfulness and Elsa's more regal, ice - castle - based world. They might worry about how their baby will inherit their powers and whether they can keep their child safe from those who might want to use the baby's powers for evil.
One possible plot could be that a magic spell gone wrong in Berk turns Hiccup into a baby. Toothless, being his loyal friend, tries to protect the baby Hiccup from the chaos that ensues. The other Vikings are confused at first but then start to take care of the baby Hiccup in their own clumsy ways, leading to some comical situations.
A plot twist might be the discovery that they are part of an ancient prophecy. They initially got married for love, but then find out that their union is crucial for saving both their worlds from a great evil. Maybe there's an evil sorcerer who has been waiting for them to marry so he can steal their combined powers. So they have to figure out how to fight this sorcerer while also dealing with the new pressures of their relationship.