One possible plot could be that some of the Zootopia characters end up in the GTA 4 world. For example, Judy Hopps might be on a mission to find a missing Zootopia citizen who has somehow been transported to Liberty City. She would have to navigate the rough and tumble world of GTA 4, dealing with its seedy characters and dangerous situations while still maintaining her sense of justice. The contrast between the cute and furry Zootopia characters and the gritty GTA 4 setting would create an interesting dynamic.
Well, it could be that a GTA 4 character stumbles into Zootopia. Imagine Niko Bellic suddenly finding himself in a world full of talking animals. He might initially be very confused but then start to see the similarities between the power struggles and underworld activities in both worlds. He could team up with some of the Zootopia police to stop a new criminal element that has emerged as a result of his arrival, like some of the GTA 4 gangs trying to take over parts of Zootopia.
The fanfiction could also focus on a joint adventure. Maybe some of the GTA 4 vehicles are introduced into Zootopia. The Zootopia characters, like Nick Wilde, could be fascinated by these new modes of transportation. They could then go on a cross - world adventure, using the GTA 4 vehicles to travel between different areas of Zootopia and even into portals that lead to parts of the GTA 4 world. Along the way, they have to deal with cultural clashes and the different laws and rules of each world.
A plot could involve a group of vault - dwellers from the Fallout world accidentally stumbling into Zootopia. The animals in Zootopia are initially suspicious and scared of these strange new creatures. However, they soon realize that they need to work together. The vault - dwellers bring with them advanced technology that could help Zootopia deal with some of its own problems, like energy shortages. In return, the animals in Zootopia offer their unique skills, such as the speed of the cheetahs for scouting or the strength of the rhinos for defense.
One possible plot could be that Judy Hopps, being the curious and adventurous rabbit she is, somehow stumbles into Willy Wonka's chocolate factory which has mysteriously appeared in Zootopia. The animals are in awe of the magical candies and treats, but there are also some rules that they need to follow, much like in the original Willy Wonka story. For example, the golden ticket concept could be adapted where certain animals find tickets that allow them access to a special part of the factory, and there could be some lessons about greed and kindness along the way.
One possible plot could be that Judy Hopps and Nick Wilde accidentally find a portal to the human world. They are initially shocked by the different environment and the bipedal humans. They then get into various comical situations as they try to understand human customs. For example, they might be confused by traffic lights or the concept of money in the human world. They could also use their animal skills to help humans in some unique ways, like Judy's amazing jumping ability being used to rescue a cat stuck in a tree in a human neighborhood.
A plot could involve the Akatsuki in the GTA world. They could be a powerful criminal organization in the game's setting. They might be involved in drug dealing, car theft rings, and assassinations. Naruto and his team would then have to navigate the GTA city, using its rules and their ninja abilities to take on the Akatsuki. They could drive around in cool cars, like Naruto driving a bright orange sports car, and use jutsus to combat the Akatsuki's modern - day weaponry.
One possible plot could be that a character from Sing, like Buster Moon, accidentally travels to Zootopia. He could then team up with Judy Hopps to put on a huge musical show in Zootopia. This would bring the two different worlds together and introduce the animals of Zootopia to the joys of musical theater. They might face some challenges like getting approval from the strict Zootopia officials who are not used to such large - scale, chaotic musical events.
A human in a Zootopia fanfiction could be a scientist who accidentally creates a portal to Zootopia. Once there, the human has to adapt to the new world. The human starts studying the unique biology of the animals. This could lead to some comical situations as the human tries to understand how things work in Zootopia. At the same time, the animals are both curious and a bit skeptical of this strange new visitor.
A crossover fanfiction might have the law - enforcement aspects of both combined. For instance, the NYPD officers from Blue Bloods could learn from the unique ways that the Zootopia police deal with their diverse population of animals. Or perhaps an animal from Zootopia travels to the city in Blue Bloods and causes some chaos due to their different nature, and both sets of characters have to figure out how to handle it.
A great plot twist could be that one of the main villains in Ladybug is actually an animal from Zootopia who has somehow gained access to a Miraculous. This would completely change the dynamic as the Zootopia characters would have to face one of their own kind gone bad. It would also force Ladybug and Chat Noir to understand the different motives and behaviors of animals.
Well, it might be about the Zootopia characters trying to adapt to New York's human - dominated environment. For example, Judy would be shocked at the lack of animal - only areas. Nick would probably use his charm to get by. And they'd end up in all sorts of adventures, from getting chased by the NYPD because they're strange - looking animals, to making friends with a group of animal - loving New Yorkers who help them find their way back home.
The human soldier might be a lost and confused figure in Zootopia. He could start off trying to find a way back home. Along the way, he befriends some of the animals, perhaps a fox like Nick Wilde. Together, they discover a conspiracy that endangers both humans and animals in their respective worlds. So, he decides to stay and fight, using his military training and knowledge of different combat strategies to assist the Zootopia police in taking down the bad guys.