Another possibility is a large - scale emergency situation that requires the cooperation of both Chicago Fire and Chicago PD. A terrorist attack or a major disaster could be the setting. The firefighters would be dealing with the fires and rescues, while the police would be maintaining order and looking for the culprits. This would show how the two departments work together under high - stress situations and how their relationships develop during the crisis.
A crossover could involve a character from Chicago Fire having a personal connection to a case the Chicago PD is working on. Maybe a firefighter's family member is wrongly accused of a crime. The firefighter then teams up with the PD detectives to clear their family member's name. This would bring in elements of loyalty, family, and the different skills of both groups. They could share information and resources to solve the mystery.
One idea could be a joint emergency situation where a building fire is also a crime scene. Maybe the arsonist is still on the premises and the teams from both Chicago PD and Chicago Fire have to work together. The PD has to search for the suspect among the chaos and the firemen have to put out the fire while also trying not to destroy evidence.
A great character interaction could be between Severide from Chicago Fire and Voight from Chicago PD. Severide's laid - back but confident attitude could clash or complement Voight's tough and no - nonsense approach. They might start off not seeing eye - eye but then come to respect each other as they work towards a common goal, like solving a crime that is related to a fire incident.
Voight from Chicago PD would be really interesting. He has a strong personality and his no - nonsense attitude would contrast well with the more team - oriented and often more laid - back firefighters. His detective skills could also be crucial in solving a crime that intersects with a fire - related situation.
One idea could be a crossover with another police drama, like 'Law & Order'. The characters from Chicago PD could team up with the detectives from 'Law & Order' to solve a case that spans both cities. Another idea is a crossover with a superhero show. Maybe a superhero comes to Chicago and the PD has to work with or around this new element. For example, if there was a crossover with 'The Flash', the fast - running hero could help the PD catch a super - fast criminal that they couldn't handle on their own.
Maybe there's a serial killer on the loose who targets victims in both Chicago and New York. The Chicago PD starts noticing a pattern of killings in their city, and SVU has been dealing with similar cases in New York. They come together to compare notes. The killer seems to be targeting young women who are involved in marginalized communities, whether it's through drugs in Chicago or prostitution in New York. The combined forces of both teams are needed to stop the killer before more lives are lost.
A fanfic could focus on Voight's backstory. Maybe he has an old case that resurfaces, and he has to deal with the ghosts of his past while still leading his team. It could show his vulnerability and determination in the face of personal and professional difficulties.
Voight would be a great character to feature in a crossover. His tough - as - nails attitude and unorthodox methods would make for interesting interactions with characters from other shows. Another good one is Halstead. He's smart and resourceful, and could easily adapt to different situations in a crossover. For example, if it was a crossover with a medical show, he could be the one trying to communicate with the medical staff about the details of an injury related to a case.
One great thing about Chicago PD and Law & Order: SVU crossover fanfiction is the unique character interactions. Writers can bring together the tough cops from Chicago PD and the specialized detectives from SVU. For example, they might create a scenario where a case starts in Chicago but has ties to New York, leading to a joint investigation. This allows for some really interesting dynamics as the characters from different shows with different methods have to work together.
One idea is that Lindsay gets hurt by a booby - trap. She's exploring a crime scene and accidentally triggers a hidden trap. It injures her leg badly. She then has to rely on her colleagues to carry on the investigation while she recovers. This could also lead to some interesting character development as she has to deal with being incapacitated for a while.
Another plot could involve a human trafficking ring that operates between the two cities. SVU has some experience with these types of cases in New York, but the Chicago PD has its own intel on the local side of things. The two teams have to combine their resources and knowledge to take down the entire ring. This would involve a lot of undercover work and tense moments as they try to rescue the victims and arrest the criminals.