One possible plot could be that Harry and Draco, after years of rivalry and then gradually getting to know each other better, find themselves in an unexpected situation where they have a child together. Maybe it starts with a magical accident that binds their magic in a way that results in a baby. They then have to deal with the shock from their friends and family. Harry's friends like Ron might be initially very skeptical and angry, thinking Draco is up to something. But as time goes on, they see that Draco has changed and that he and Harry truly care for the baby and each other.
Perhaps the baby is a result of a time - traveling incident. Harry and Draco are sent back in time and due to some complex magical interference, they end up having a baby in that time period. They then have to figure out how to get back to their own time while protecting the baby. In the process, they learn a great deal about each other's pasts and how they were shaped by their families. This new - found understanding strengthens their bond as they raise the baby in the difficult circumstances of a different era in the wizarding world.
Well, one possible plot could be that in a world where magic allows for such things, Harry and Draco might have had a secret relationship. Maybe they were forced to work together on a dangerous magical task and during that time, their feelings changed. And this led to Harry becoming pregnant, and then they would have to face the reactions of their friends and the wizarding community which could range from shock to outright hostility.
One possibility could be that Draco is forced into taking care of Harry due to some magical circumstances. Maybe there's a spell gone wrong that makes it his responsibility. He initially resents it but as he spends time with baby Harry, he starts to see the innocence in him and develops a soft spot.
One possible plot could be that Draco and Ginny initially struggle with their relationship being accepted in the wizarding world. Their baby could be a symbol of hope and change. Maybe the baby has some unique magical abilities that draw the attention of both the good and the bad in the wizarding community. And they have to protect their child while also dealing with their own past differences.
Well, in some Draco and Harry baby project fanfictions, it might involve the two characters being paired together for a school project that involves taking care of a 'baby' (which could be like a magic - created or a simulation). They start off disliking each other as they are from rival houses. But as they work on the project, they begin to understand each other better, and their relationship evolves from animosity to friendship or even something more romantic.
One possible plot could be Severus saving baby Draco from a dangerous situation. Maybe there's a dark wizard targeting the Malfoy family and Severus steps in to protect Draco. This could start a special connection between them.
The plot might involve Draco learning how to be a father. He could struggle with his past and how it might affect his child. For example, his former associations with the Death Eaters could put his baby in danger, so he has to find a way to break free from that legacy and create a safe environment for his child. This could also lead to him reconciling with some of his former enemies, like Harry Potter, for the sake of his baby.
Perhaps in the fanfiction, a powerful magical artifact forces Harry and Severus to conceive a baby as part of a prophecy. They initially resist but gradually come to accept it. The plot might involve their journey to protect the baby from dark forces who want to use the baby's unique heritage for evil purposes. They have to put aside their differences and work together as parents.
One possible plot could be that Tom and Harry are in a world where magic has some unexpected consequences. Maybe a spell gone wrong results in them having a baby. They then have to deal with the reactions of their friends and family, like Hermione being shocked at first but then helping them adjust to this new situation.
One possibility could be that Harry and Edward, who might be from different fictional universes, meet in a crossover scenario. They fall in love and decide to start a family. The baby could inherit unique powers or traits from both of them. Maybe the baby has Harry's courage and Edward's charm. And their friends from their respective worlds would have to adjust to this new situation and support them in raising the child.
Well, perhaps the plot could involve the challenges they face as new parents. Maybe they have to deal with the reactions of their friends and family, who might be surprised by their union. Another aspect could be how they raise the baby in the wizarding world, with all its unique traditions and dangers.