There are several engaging themes. The power of love is a big one. In both Frozen and Once Upon a Time, love plays a crucial role, and fanfictions often explore different aspects of it. Another theme is the clash and fusion of different cultures. The Nordic - inspired world of Frozen and the more diverse fairy - tale world of Once Upon a Time can create interesting cultural dynamics. Moreover, the theme of prophecies and destinies is often explored. How the prophecies in both universes interact or conflict can lead to some exciting storylines in fanfictions.
In Frozen Once Upon a Time fanfiction, a common theme is the redemption of characters. Maybe a character from Once Upon a Time who was a villain gets a chance at redemption through their encounter with the Frozen characters. Also, the theme of family is important. The strong family bonds in Frozen can be contrasted or combined with the often - complex family relationships in Once Upon a Time. Additionally, the idea of time - travel or alternate timelines can make for some really interesting fanfictions as it allows for new and unexpected interactions between the two universes.
A great plot for Frozen fanfiction could be a time - travel story. For example, Elsa is sent back in time to when her parents were young. She has to figure out how to get back to her own time while also trying not to change the past too much. But she might also learn some secrets about her family's past and her own powers. Another could be a story about a competition in Arendelle. Anna decides to hold a magical - themed competition, and people from all over come to show off their skills. Elsa has to judge, and in the process, she meets someone who seems to have powers similar to hers but uses them for evil. Anna, Elsa and Kristoff then have to stop this person.
One idea could be that Elsa's powers somehow link to a magic in the Once Upon a Time world. Maybe her ice powers are the key to unfreezing a character who has been trapped by a dark curse. For example, she could help break the spell on Emma Swan's parents. Another plot could involve Anna getting lost in the Enchanted Forest and having to team up with characters from Once Upon a Time like Snow White and Prince Charming to find her way back to Arendelle. A third idea is that the Evil Queen from Once Upon a Time tries to steal Elsa's powers to use for her own evil deeds, creating a big conflict between the two universes.
Family relationships are a big theme. Some fanfics focus on the family dynamics between characters like the Charmings and their descendants. There are also fanfictions that revolve around the theme of identity. Characters in 'Once upon a time' often have complex identities, and fan writers like to dig deeper into how these identities are formed and how they can change over time.
Well, there could be a crossover where the Dark One from Once Upon a Time is interested in Elsa's powers. He might try to manipulate her into using her ice magic for his own dark purposes. Anna, on the other hand, would do everything she could to stop him, with the help of some of the heroes from Once Upon a Time like Henry. This would create a really exciting story full of magic, adventure and a battle between good and evil.
One idea could be exploring the backstories of the lost boys in more detail. Maybe one of them has a hidden connection to a character from the outside world. Another plot could involve a new villain coming to Neverland who has a different kind of magic that challenges Peter Pan. Also, a story about Wendy's granddaughter returning to Neverland to find a lost family heirloom could be interesting.
First, know the characters well. Elsa is complex, with her fear of her powers and her love for her sister. Anna is brave and impulsive. Kristoff is gruff but kind - hearted. Then, come up with an original plot. Don't just retell the movie. Add new elements, like new characters or new locations. Also, pay attention to the dialogue. Make it sound like the characters from the movie would actually say those things. For example, Anna would be more likely to use excited and energetic language.
One popular theme is alternate universes. For example, what if Emma Swan had grown up in the Enchanted Forest instead of our world. Another theme is exploring different relationships between characters. Some fanfictions focus on a deeper friendship between Regina and Snow White that might have developed under different circumstances. And then there are those that delve into the backstories of minor characters, like how the Blue Fairy came to be.
Redemption arcs are also quite popular. Given that many of the characters in 'Once upon a time' have complex backstories and have done bad things in the past, fans often write about their journey towards redemption. Family relationships are a big theme too. There are stories exploring the bonds between parents and children, siblings, etc., like the relationship between Snow White and her daughter.
A 'found family' trope is quite common. Characters who were alone or estranged in the show form a close - knit family in fanfiction. For instance, Henry might bring together different characters who then become his new family. Also, the 'hurt/comfort' trope, where a character is hurt (physically or emotionally) and another character comforts them, is frequently used in Once upon a Time fanfics.
One common theme is the exploration of alternate timelines. Since 'twice upon a time' implies a doubling of the story - perhaps one that already exists in the 'once upon a time' framework - fanfiction often delves into how different choices in these two timelines can lead to vastly different outcomes for the characters. Another theme could be the redemption of characters. In these types of fanfictions, characters who might have been villains in the original 'once upon a time' setup could get a second chance in the 'twice upon a time' scenario to change their ways and become heroes or at least more morally ambiguous figures. Also, the theme of lost love and its rekindling is popular. Maybe a couple was separated in the 'once upon a time' but are reunited or have a chance at a new relationship in the 'twice upon a time'.