Maybe the baby is a key to uniting two different kingdoms. The story could revolve around how Lucy and Caspian have to travel across different lands, facing many challenges along the way, to present the baby as a symbol of peace and unity. They might encounter various characters, some friendly and some not, who either help or hinder their journey.
One idea could be that the baby has a special power. For example, the baby might be able to communicate with magical creatures in a way that no one else can. This could lead to all sorts of adventures as Lucy and Caspian try to protect the baby from those who might want to use the power for evil.
One plot idea could be that they are separated during a battle in Narnia. When they are reunited, the relief and joy lead to a passionate kiss. This kiss could symbolize their new - found determination to never be parted again and fight side by side.
One idea could be that Lucy discovers a hidden magical ability that helps Prince Caspian in a crucial battle. For example, she might be able to communicate with the spirits of the forest in a way that no one else can, and these spirits provide strategic advice to defeat an enemy. Another plot could involve Lucy getting lost in a mysterious part of Narnia and Prince Caspian embarking on a quest to find her, during which they both learn more about each other's pasts and grow closer.
Maybe there could be a plot where an evil force in Narnia is trying to separate them. Lucy and Caspian have to go on a dangerous journey together to stop this force. Along the way, they rely on each other's strengths. Caspian protects Lucy from physical threats while Lucy uses her magic to solve various puzzles. Their bond grows stronger through these trials and they eventually confess their love.
One idea could be that they discover the pregnancy during a time of peace in Narnia. They then face the challenges of preparing for a new life while also dealing with the expectations of their people. For example, Caspian might worry about how to protect his family in a world that still has some threats. Lucy, on the other hand, could be thinking about how to raise a child with the values of Narnia.
One idea could be that Lucy and Wyatt find out they're having a baby with special time - traveling abilities. It could add a whole new dimension to their adventures as they try to protect the baby from those who might want to use its powers.
One common theme is adventure. Since they are characters from Narnia, the stories might involve them going on adventures while taking care of a baby. Maybe they are on a quest and have to protect the baby at the same time.
One idea could be that Susan returns to Narnia during a time of great peril, and she and Prince Caspian have to team up to defeat a new, powerful enemy. They might discover hidden powers within themselves along the way.
One idea could be that Peter gets lost in the forest of Narnia on his own during a quest and has to rely on his wits and some unexpected help from a minor character in the Prince Caspian story to find his way back to the main group. Another could be a time - travel twist where Peter is sent back to a crucial moment in Prince Caspian's past and has to figure out how to change things without disrupting the future of Narnia too much. And perhaps a story where Peter and Prince Caspian have a misunderstanding that leads to a mini - adventure to resolve their differences and strengthen their bond.
A great plot could be a time - travel related one. Maybe something goes wrong in Narnia, and Peter and Caspian are sent back in time to the very beginning of Narnia's creation. They have to figure out how to get back to their own time while also making sure that the events that led to Narnia's creation still happen as they should. They meet all kinds of ancient beings and learn secrets about Narnia that no one else knows.
One idea could be that Susan returns to Narnia in a time of great need, and she and Prince Caspian have to work together to defeat a new, powerful enemy. Maybe they discover an ancient magic that only they can unlock through their combined efforts.