One idea could be that Elijah discovers a lost baby and decides to protect it at all costs. He might use his skills and resources to keep the baby safe from various threats in a fantastical world.
Maybe Elijah is magically connected to the baby. The baby has some special power, and Elijah has to figure out how to help the baby control it while also forming a deep bond with the little one. He could take the baby on a journey through different magical realms to discover its origin and purpose.
Well, it could be a story where Elijah, who is usually a tough character, is softened by the presence of a baby. The baby might be the key to resolving a long - standing conflict in the story's world. Elijah has to learn how to care for the baby while also trying to use this new situation to his advantage in the greater scheme of things. He might have to deal with other characters who either want to harm the baby or use it for their own ends.
One idea could be that the baby has some sort of special power. Since Elijah is a powerful vampire and Katherine has her own unique charm and skills, their baby might inherit something extraordinary. Maybe the baby can control the minds of vampires or has an uncanny ability to sense danger.
One idea could be a story where the phantom has a protective instinct towards the baby. Maybe the phantom is a misunderstood entity and the baby is the only one who isn't afraid of it, so it decides to safeguard the little one from all the evils in its spooky world.
A great plot for a 'baby daddy fanfic' could be that the baby daddy is a struggling artist. He and the mother had a passionate relationship in art school. Years later, he's still trying to make it big when he discovers he has a child. He then has to balance his pursuit of art with his responsibilities as a father. He might use his newfound fatherhood as inspiration for his art, and along the way, he and the mother re - explore their relationship while dealing with the joys and challenges of raising a child.
A possible plot could be that Bella and Elijah are from different species in the fanfiction world, for example, one is a vampire and the other a werewolf (assuming such a scenario exists in this fanfic). Their pregnancy is then a very unique situation that defies the norms of their world. This could lead to a lot of drama, with different factions either trying to protect or harm them because of the baby. They would have to rely on each other and a few trusted friends to navigate this new and dangerous situation.
One idea could be that Elijah discovers he is going to be a father during a time of great turmoil in the supernatural world. His family's enemies might see this as a weakness and target him and his unborn child. Another plot could involve Elijah trying to protect the mother of his child from the dangerous vampire politics and ancient curses that could harm her or the baby. Maybe he has to make a deal with a powerful witch to ensure a safe pregnancy for the mother.
One idea could be that Naruto and Sasuke find a mysterious baby in the forest. They then have to figure out where the baby came from and how to take care of it together. This could lead to some comical moments as they struggle with diaper changing and feeding.
A plot idea might involve Baby Princess Luna having a dream where she travels to the future and sees herself as a great queen. She then wakes up determined to start learning all the things she'll need to know. So she tries to follow around the older princesses and imitate their lessons, but she often misunderstands and does things in her own unique, cute way. For example, she thinks that 'diplomacy' means sharing her toys with everyone in the kingdom.
A possible plot for a Baby Sitters Club fanfic could be that the club decides to start a babysitting exchange program with another club from a different town. This would introduce new characters and new babysitting techniques. Another idea is that a member of the club starts a babysitting blog and it becomes really popular, but then they face some negative comments and have to deal with the pressure. You could also write about a time - travel adventure where the babysitters end up in the past or future and have to babysit kids in those eras.
One idea could be a baby bumblebee getting lost in a strange new world on Earth and befriending a young human who helps him find his way back to the Autobots. Another could be baby bumblebee's first encounter with his own abilities and how he accidentally causes some chaos among the Autobots while trying to show off. Or perhaps a story where baby bumblebee discovers a hidden power within himself during a dangerous mission.
Perhaps the fanfiction could be about a baby that is the result of a time - travel accident within the Umbrella Academy world. The baby has a mix of powers from different eras and the academy members have to figure out how to deal with this unique situation. They might have to teach the baby how to control its powers while also protecting it from those who fear its abilities.