One possible plot could be that they first meet in a rather unexpected situation. Maybe Jack is on one of his adventures and stumbles upon Souls Prime in a time of need. Their connection grows as they face challenges together, like fighting off some common enemies. As time passes, they realize their feelings for each other are more than just friendship and decide to get married. Their wedding could be a grand event where friends from both of their worlds come together to celebrate.
The plot might involve Jack Darby being initially hesitant about the relationship with Souls Prime. But Souls Prime shows him a different perspective on life and their bond deepens. They could go on a journey to find a special artifact or a place that is significant for their union. And when they finally decide to marry, there are some who oppose it due to their different origins, but they overcome those obstacles with their love and determination.
In the fanfiction, a big challenge could be jealousy. There may be others who are attracted to either Jack or Souls Prime. Jack, being a human, might face jealousy from other humans who don't understand his relationship with Souls Prime. And Souls Prime might also face similar issues from their own kind. Also, they need to find a balance in their relationship. Since they are likely to have different roles and responsibilities in their respective worlds, they have to figure out how to divide tasks and support each other in their married life.
One possible plot could be that Elsa, from Arendelle, and Jack Frost, from his own wintry realm, meet by chance during a magical snowstorm that bridges their two worlds. At first, they are curious about each other's powers over ice. As they spend more time together, they start to fall in love. Their relationship might face challenges like how the people of Arendelle would accept Jack, a magical being not from their world. But in the end, they overcome all the obstacles and have a beautiful wedding ceremony with ice sculptures and snowflakes everywhere, uniting their two different worlds in a celebration of love.
Well, it could start with Jack Darby being a huge Iron Man fan in his own Transformers universe. One day, he stumbles upon a strange energy source that gives him powers and abilities similar to Iron Man. He decides to use these new powers to protect his city from the Decepticons in a more high - tech and flashy way than before. Along the way, he might face some challenges like dealing with the Autobots who are skeptical of his new powers, or having to face a new and powerful Decepticon that is attracted to his new - found technology. He also might try to reverse - engineer his powers to create more advanced technology for the Autobots to use in their fight against the Decepticons.
One possible plot could be that Jack's mutant powers allow him to better communicate with the Transformers on a mental level. This new ability helps the Autobots in their battles against the Decepticons as he can relay information faster and more accurately.
In Transformers Prime fanfiction where Jack gets hurt, one possibility could be that he gets injured during a battle between the Autobots and Decepticons. Maybe he was trying to help the Autobots and got caught in the crossfire. For example, a stray blast from a Decepticon weapon could have hit him while he was guiding Bumblebee to a strategic location.
In a more light - hearted plot, Ahsoka could be attending an intergalactic convention (yes, it's a stretch but it's fanfic after all) and Jack Darby is there representing the Autobots in a cultural exchange. They meet and find that they have a lot in common in terms of their values and experiences in fighting for the greater good. They then embark on a series of misadventures at the convention while also learning from each other's cultures and fighting styles.
One possibility is that it could be a story full of magic and adventure. They could combine their powers to protect their new kingdom. Maybe they'd create ice sculptures together that come to life and serve as their protectors.
Well, in such a fanfiction, perhaps Jack discovers an ancient relic that bestows upon him the power of a Prime. He then has to learn to control this newfound power while facing off against old enemies of the Autobots. Maybe he teams up with Optimus Prime and the others, using his unique human perspective to come up with strategies that the Autobots hadn't considered before.
Well, perhaps they already live in a peaceful kingdom. Jack is a brave knight and Rapunzel, with her long hair, has special powers. When she becomes pregnant, Jack vows to protect her at all costs. He goes on quests to get special herbs for her health during pregnancy. Meanwhile, Rapunzel uses her powers to keep their home safe and they prepare for the arrival of their baby together.
Well, it could be about how Jack and Solus Prime meet. Maybe they cross paths during a battle and immediately feel a special connection. Then they start to discover more about each other's personalities and values, which deepens their love.