One possible plot could be that Jack and Angelica are on a new adventure together. They are forced to work closely to find a hidden treasure. Along the way, they face many challenges and in a moment of victory and celebration, they share a kiss. It could be a spontaneous moment, filled with the excitement of the discovery and their underlying attraction for each other.
After the kiss, they might become more open with each other. Jack could start to share more of his true feelings and secrets with Angelica. They could decide to become partners in all their future adventures, with a new level of trust between them.
Well, they would face many challenges. Firstly, in terms of their relationship, they have a complex dynamic already. With the pregnancy, they'll need to figure out how to co - parent. Jack is used to being on his own most of the time, and Angelica is a strong - willed woman. Secondly, there's the issue of their enemies. Their enemies could use Angelica's pregnancy against them, either by trying to capture her or using it as blackmail. Thirdly, from a practical point of view, finding proper medical care during pregnancy in the pirate world would be extremely difficult.
One idea could be that Jack Sparrow, in his usual roguish way, is initially shocked but then slowly warms up to the idea of becoming a father. Maybe he tries to give up his pirating ways for a while to take care of Angelica. Another could be that Angelica uses the pregnancy to manipulate Jack into doing certain things for her, like helping her find a hidden treasure that she believes will secure their future. And a third idea is that they both face opposition from other pirates or characters who don't want a pregnant woman on board or think Jack will be distracted.
Their relationship could start with mistrust. Since they both have their own agendas, they might initially be at odds. For example, if they meet on a ship where Angelica is looking for something specific and Jack is just there to steal some loot. But as they face common enemies, like pirates who are more ruthless than Jack, they start to rely on each other.
Another plot could be that Angelica gets cursed and Jack, with his wits and knowledge of the supernatural, tries to break the curse. They go on a journey filled with strange creatures and difficult challenges. Jack might have to make some tough choices between his own self - interest and saving Angelica.
One possible plot twist could be that the kiss is part of a ruse. Maybe Jack is trying to deceive some of his enemies by making them think he and Elizabeth are romantically involved. He might use this false relationship to gain an advantage in their world of pirates and politics.
Many Jack and Angelica fanfictions are based on alternate endings to their story arcs. Some might rewrite the ending of their relationship to be more positive or, on the contrary, more tragic. There could be a fanfic where Jack sacrifices himself for Angelica in a very dramatic and unexpected way, changing the whole tone of their relationship.
The main characters are obviously Jack and Angelica. Jack, the swashbuckling pirate, and Angelica, who has her own complex personality and relationship with Jack.
One possible plot could be that Jack and Angelica face a lot of challenges during the pregnancy. Maybe they have to deal with family reactions, like Jack's pirate crew being shocked but gradually supportive. They might also struggle with preparing for the baby in their rather unconventional lifestyle.