There might be a fanfiction where a character from NCIS is undercover in a situation similar to the ones in SWAK. For example, Tony could be infiltrating a group that is related to the SWAK storyline. It would be full of action, with Tony having to use his undercover skills while also dealing with the unexpected elements from the SWAK side of things.
One interesting story could be about the NCIS team getting involved in a case that has ties to the events in SWAK. Maybe they have to work together to stop a terrorist plot that was initially uncovered in the SWAK universe. The characters from both would bring their unique skills and personalities, like Gibbs' leadership and determination combined with the charm and quick - thinking of the SWAK characters.
Another option is to check out some NCIS or SWAK - specific fan forums. There, fans often share and recommend their favorite crossover fanfictions. You can join the discussions and ask for suggestions. Some forums might even have their own curated lists of great fanfictions that include crossovers between these two.
One interesting story could be about the characters from NCIS and SG - 1 teaming up to solve a mystery that involves both Earth - based crimes and alien technology. Maybe they have to track down a stolen alien weapon that is being sold on the black market on Earth.
One plot idea could be a joint case where the NCIS team and the NCIS LA team have to work together to solve a crime that spans across different locations. Maybe a terrorist threat that has connections in both Washington D.C. (where NCIS is based) and Los Angeles.
Yes, there are likely some interesting ones out there. A good place to start looking could be on fanfiction websites like Archive of Our Own. Some might explore how the characters from NCIS interact with those from Highlander in unique crime - solving scenarios or character - development arcs.
A more complex idea could involve a threat that endangers both the NCIS world and the Twilight world. So, the NCIS team has to team up with the Cullens and the werewolves to fight against this common enemy. This would bring in all the action - packed elements from NCIS like investigations, shoot - outs, and also the supernatural elements from Twilight like vampire powers and werewolf transformations.
Another concept could be that one of the NCIS agents has a family member who is in danger because of a supervillain's plot. The Avengers get involved to protect the agent's family, but the NCIS team doesn't trust them at first. Gibbs would be very protective and suspicious. As the story progresses, they all learn to work together. Ziva could show off her combat skills to Black Widow, and they could have a friendly sparring match while sharing their combat experiences.
Maybe there's a situation where an alien artifact is found on Earth that has a connection to Atlantis. The NCIS team starts investigating it, not fully understanding what it is at first. Then the SGA team gets involved because they recognize the technology. They work together to keep the artifact safe from various threats, both Earth - based and alien.
A scenario could be a missing person case that spans both areas. The NCIS LA team starts the investigation on the mainland when they realize the person might have headed to Hawaii. Then they call in the Hawaii 5 - 0 team for help. As they search, they discover that the missing person is involved in some sort of international conspiracy that both teams have to unravel.
One great 'ncis ncis los angeles crossover fanfiction' story is 'The Joint Mission'. It combines the characters from both shows in a really exciting way. The story has a great plot that keeps you on the edge of your seat as the teams from NCIS and NCIS Los Angeles work together to solve a complex international crime.
A really interesting piece of fanfiction in this crossover genre is 'Cross - Agency Tensions'. This story delves into the initial frictions between the NCIS and NCIS Los Angeles teams when they first start working together, and how they overcome them. It's a great read for those who like character - driven stories.