Another idea is a crossover with 'Star Wars'. The Ghosts could be transported to a galaxy far, far away. They might have to use their military training to survive in a universe filled with lightsabers, the Force, and various alien species. They could form alliances with the Rebel Alliance or get caught up in the conflict between the Sith and the Jedi.
One idea could be a crossover with the 'Halo' universe. The soldiers from 'Call of Duty Ghosts' could team up with Spartans to fight a common alien threat. They could share their combat strategies and learn from each other's advanced technology.
One plot idea could be Logan and Keegan getting separated during a mission in a war - torn city. Logan has to fight his way through enemy lines to find Keegan who is trapped and injured. Another could be a prequel - style story where they first meet during their training days and start to form their unbreakable bond.
One idea could be a crossover with a science - fiction movie like 'Blade Runner'. The Black Ops 3 characters could find themselves in the dystopian future of 'Blade Runner', having to deal with the replicants while also trying to figure out how to get back to their own world. Another plot could involve a crossover with a superhero universe. Maybe the soldiers in Black Ops 3 gain superpowers and have to use them to fight against an even greater threat that combines the high - tech warfare of their world with super - villainy.
A cool plot could involve a crossover with the 'Alien' franchise. The soldiers in Call of Duty Advanced Warfare could be sent to a distant planet where they encounter the deadly Xenomorphs. They would have to use their advanced military skills and weaponry to survive against these terrifying creatures. It could also be interesting if there was a crossover with a post - apocalyptic game like 'Fallout'. The Advanced Warfare characters could end up in the wastelands of 'Fallout', trying to adapt to the new environment and find a way back to their own world while dealing with the various threats in the Fallout universe.
Master Chief from 'Halo' would be an excellent choice. His superhuman abilities and combat experience would add a new dimension to the 'Call of Duty Ghosts' story. He could lead the Ghosts in a crucial battle or teach them some of his unique combat techniques.
Another option is a crossover with a post - apocalyptic game like Fallout. The Black Ops 2 characters could find themselves in the desolate wasteland of Fallout. They would have to adapt to the new environment, deal with radiation, and form alliances with the factions in that world. Their combat skills would be put to the test in a whole new way against mutated creatures and raider gangs.
One idea could be to have the soldiers from Call of Duty end up in the RWBY universe. They could be shocked by the Grimm and then team up with the RWBY characters to fight against them. Another idea is a crossover where RWBY characters use Call of Duty - style weapons. For example, Ruby could use a high - tech sniper rifle like in Call of Duty.
One idea could be creating an OC (Original Character) who is a sniper with a troubled past. Maybe they were once a part of a special forces unit but got betrayed. Another idea is an OC that is a female medic in a male - dominated warzone, facing discrimination and proving herself. A third idea could be an OC that discovers a hidden conspiracy within the military hierarchy of the Call of Duty universe.
One possible plot could be that Naruto and his friends are suddenly transported into the Call of Duty universe. They have to adapt to the modern warfare settings, with Naruto's ninja skills giving him an edge in close - quarters combat. They could team up with some of the Call of Duty characters to fight against a common enemy, like a rogue group that has stolen some powerful jutsu and is using it in the war - torn landscapes of the Call of Duty world.
The backstories of the main ghost characters can be considered as 'ghost stories' too. They often have a past filled with tragedy and mystery, like how they became part of this special force. Their personal vendettas and the events that led them to fight are quite engaging.
The story of Call of Duty Ghosts is set in a future where a group of elite soldiers known as Ghosts fight against a powerful and aggressive enemy force. It involves themes of survival, loyalty, and strategic warfare. The Ghosts are outnumbered but use their skills and advanced weaponry to defend their homeland.