In a fanfic where Sam is pregnant, it could be that there's some sort of supernatural influence. Maybe an enemy of Danny Phantom has a plan and Sam's pregnancy is part of it. She and Danny would then have to fight against this threat while also dealing with the physical and emotional changes that come with pregnancy. It could also explore how their friends like Tucker react and support them during this difficult time.
A possible plotline could revolve around Sam's pregnancy being a sign of a new power or prophecy in the 'Danny Phantom' universe. Sam and Danny would have to figure out what this means for their future and for the safety of their world. There could be a lot of character development as they face the challenges of impending parenthood. They might have to make sacrifices and learn to rely on each other more than ever, all while still being involved in the fight against the ghosts and other threats in their world.
The plot could involve some sort of mystery related to the pregnancy. Like, there could be a ghostly force that is either helping or hindering the pregnancy. And they have to figure out what it is and how to deal with it. Also, their friends like Tucker could play important roles in supporting them.
The plot could center around the emotional journey. Sam may experience a range of emotions from joy to fear. Danny could be there to comfort and encourage. They might also face difficulties such as financial concerns. For example, they'll need to think about buying baby stuff, finding a bigger place if needed. And as the pregnancy progresses, they'll have to start thinking about Dani's future, like education and what kind of life they want to provide for the child.
Well, one aspect could be the role of their superpowers in the pregnancy. Perhaps Sam's pregnancy has some unexpected effects on Danny's powers or vice versa. And the story could also delve into how they prepare for the new arrival in a world full of ghosts and other supernatural elements.
In some fanfictions, it could happen during a moment of vulnerability. For example, if Sam gets hurt while they're on an adventure, and Danny is really worried about her. As she recovers, Danny realizes how much she means to him and they share a kiss. Or maybe they get stuck in a ghost - created alternate dimension where they think they might not get out. In that desperate situation, they confess their feelings and kiss for the first time.
It could lead to a lot of relationship changes. Maybe their friends and family in the fanfic world would have different reactions, either supportive or against it.
One possible plotline could be Evil Danny trying to corrupt Sam. He might use his powers to manipulate situations and turn Sam against their friends. For example, he could make it seem like their friends are in danger when they're not, just to make Sam question their loyalty.
One possible plot could be that there's some sort of magical or supernatural event that causes Sam and Ember to both become pregnant at the same time. Danny might be caught in the middle, trying to figure out how to support them both while also dealing with his own ghost - fighting duties. Maybe there are complications because of the different natures of Sam (human) and Ember (ghost), and they have to find a way to ensure the pregnancies are successful.
One possible storyline could be that Sam is influenced by a new, mysterious character in town. This character might be using some sort of mind - control or persuasion power on Sam, making her act out of character and cheat on Danny. Another idea is that Sam and Danny have a big fight over Danny's ghost - hunting duties. Sam feels neglected and in a moment of weakness, she might get involved with someone else.
One possible scenario could be that Sam betrays Danny's secret identity to someone he doesn't trust, like a ghost hunter. Maybe she does it out of jealousy if Danny starts getting closer to another character.
It could be a friendship - based theme. Danny, Sam and Lemon might be friends going on various adventures together.