In some 'Sally has a baby' fanfiction, the plot could focus on the baby's growth and development. As the baby grows, Sally discovers new things about the child's personality and talents. There could also be a plotline where Sally faces challenges in her own life because of the baby, such as having to balance her career or personal goals with being a mother. This could lead to her making difficult decisions and growing as a person throughout the story.
In a more emotional plot, Sally could be worried about bringing a baby into the world of racing, fearing for its safety. She has to overcome these fears with the support of her friends. She could also be thinking about teaching the baby all about the history and values of Radiator Springs when it grows up.
One possible plotline could be Cruz Ramirez adjusting to motherhood while still trying to keep up with her usual activities or responsibilities. Maybe she has to balance taking care of the baby and her work or adventures.
One possible plotline could be that Sally has some sort of special power or knowledge that the seven need in order to complete a mission. So they meet her to enlist her help.
One possible plotline could be that Naruto, being a powerful ninja, is summoned to Sally Jackson's world to help with a threat that the demigods there can't handle alone. Maybe it's a powerful monster from Greek mythology that Naruto's unique jutsu can defeat.
One plotline could be the secrecy around the baby. Since Sirius was on the run for a long time, they might have to keep the baby's existence a secret from the Ministry. Hermione would use her intelligence to create protective spells and hiding places. Another could be the baby showing extraordinary magical abilities early on, which attracts unwanted attention from dark forces.
One possible plotline could be Naruto's first attempts at using chakra as a baby. It would be really cute to see him unknowingly channel his chakra while playing with a toy, and then get a big surprised look on his face when something unexpected happens.
Well, a plotline might involve the cultural differences between Brienne and Tormund coming into play when raising their baby. Tormund's wildling ways and Brienne's more chivalrous background could lead to some interesting parenting moments. Also, there could be a plot where the baby is seen as a symbol of unity between different factions, and they have to deal with the pressure of that. It could also show how they adapt to their new roles as parents while still being true to their own characters.
Perhaps a plotline where the baby grows up in the care of Makino while Shanks is away at sea. The story could show the baby's longing for its father and how Makino tries to keep the memory of Shanks alive for the child. As the baby gets older, it might start to show an interest in following in Shanks' footsteps, which could create some interesting family dynamics and internal conflicts for both Makino and the child.
One possible plotline could be the challenges they face in raising the baby. Maybe there are political or family issues that they need to deal with while protecting their child.
A popular choice could be Lightning McQueen. They have a close relationship in the Cars universe, and it would be an interesting dynamic to explore with them as parents.