Well, one possible plot twist could be that the doctor is actually involved in some sort of undercover work related to a case that NCIS is investigating. Tony discovers this and has to decide whether to continue the relationship or focus on the case. It could add a lot of drama and conflict to the story.
Maybe the doctor has a past connection to one of Tony's enemies. For example, she might have unknowingly treated someone who is now out to get Tony. When this connection comes to light, it throws their relationship into turmoil. Tony would then have to figure out if she's a target or a part of the threat herself.
Another plot twist could be that the doctor is offered a job in a far - away place. This would force Tony to consider whether he's willing to uproot his life at NCIS for her. It could also lead to a long - distance relationship scenario where they both struggle to keep their love alive while dealing with their respective careers.
Ziva would be more of the type to make teasing comments. She might joke about Tony finally settling down or say things like 'A doctor? Are you sure you can keep up with her, Tony?' But deep down, she would also be happy for him as long as she thought the doctor was a good person.
One possible plot twist could be that the person Tony gives the 'gift of breath' to turns out to be a suspect in a case he's working on. This would create a moral and ethical dilemma for Tony as he has to balance his duty as an NCIS agent with the fact that he saved this person's life.
Well, perhaps a plot twist could be that they find out they are related in some convoluted way. Maybe through a long - lost family connection that was uncovered during a case. Or, there could be a sudden change in Ziva's personality due to a head injury she sustains during an investigation, which makes Tony question if they should still get married.
In some fanfics, a plot twist could be that Ziva is actually pregnant before the wedding, but she hides it from Gibbs. This adds a whole new layer of drama to the story as Gibbs discovers it later. Another could be that an old enemy resurfaces on their wedding day, threatening their new - found happiness.
Well, in the context of NCIS fanfiction involving Tony and Ada, it could be that the writer is exploring a romantic angle between them. However, this might be a deviation from the normal character dynamics in the show. Fanfiction often takes creative liberties to create new and exciting storylines. For example, they might be paired up on a dangerous undercover mission that leads to a deeper connection.
Well, perhaps they are undercover in a foreign country. They have to blend in with the local culture, which leads to some humorous situations like Tony trying to learn the local dance or Ziva struggling with the language but still managing to intimidate people. And then there's the danger aspect, where they discover a terrorist cell operating within the city they are in and have to stop them without blowing their cover.
One plot idea could be that Tony and Ziva are trying to raise their baby while still being involved in NCIS cases. They might have to deal with danger that comes too close to their family. Another could be the baby having some sort of special ability that they need to protect from bad guys who find out about it. Maybe the baby's birth also brings some old enemies of Tony or Ziva back into their lives, creating a whole new set of challenges for them.
One interesting plot twist could be that Tony discovers an unknown power of the Infinity Stones that even Thanos was unaware of. Maybe it's a power that can reverse time not just for a single person but for an entire planet. This would completely change the power dynamics in the story.
One possible plot could be that they accidentally get pregnant and then have to deal with the reactions of their colleagues at NCIS. Some might be supportive, while others might be concerned about how it will affect their work.
Another plot idea could be that the child starts to suspect that there is more to Tony and Ziva's past work at NCIS than they've been told. So the child begins to investigate on their own, getting into all sorts of trouble. Tony and Ziva then have to deal with not only protecting their child from external threats but also from the child's own curiosity which could put them in danger.