A crossover with a superhero universe would also be cool. Imagine the Monsters University characters suddenly in a world full of superheroes. The monsters' unique abilities could be seen as superpowers in this new world. Sulley's size and strength could make him a formidable force, while Mike's intelligence could be used to outwit villains. They could either team up with the superheroes or find themselves in conflict with them at first due to misunderstandings.
Another plot idea could be a crossover with a classic fairy - tale world. The monsters could end up in a land of princesses and princes. The contrast between their monstrous appearance and the beauty of the fairy - tale world would create interesting scenarios. Mike might try to court a princess, using his charm in his own way, while Sulley could be the muscle to protect them from any threats in this strange new place.
One idea could be a story where two monsters from different backgrounds at Monsters University fall in love during a lemon - themed campus event. They have to overcome the differences in their study majors and social groups to be together.
One idea could be a crossover between 'Duel Monsters' and a fantasy world like Middle - earth. The characters from 'Duel Monsters' could enter this new world and have to use their dueling skills in unexpected ways, like dueling orcs or goblins instead of other duelists. Another plot could involve a crossover with a superhero universe. Duel Monsters players suddenly find themselves with superpowers related to their decks, and they have to battle super - villains while still using their dueling strategies.
One idea could be Godzilla teaming up with other kaiju from different universes to fight a common, powerful enemy. Maybe an alien force that is threatening all kaiju-kind.
One idea could be creating an OC (original character) who is a misfit among the traditional monster students. For example, a small and timid monster in a school full of big, scary ones. The story could revolve around this OC trying to find their place and prove themselves in the university.
A story could also be told from the perspective of a professor at Monsters University. This professor discovers a hidden talent in a student that the student doesn't even know they have. The professor then takes it upon themselves to train this student privately. As the student progresses, they start to outshine some of the more popular and well - known students at the university, causing some jealousy and drama.
One idea could be a crossover with 'Toy Story'. The monsters could accidentally enter Andy's room and interact with the toys. It would be hilarious to see Sulley and Woody trying to understand each other's worlds.
One idea could be a story where the reader is a new student at Monsters University and has to team up with Mike and Sulley for a big project. They start off not getting along but as time passes, they form a strong friendship. Another could be that the reader is a transfer student from a different monster school and brings in some unique skills or ideas that impress everyone at MU. And also, a fanfiction where the reader is an invisible monster and has to find ways to be noticed and respected in the campus full of more 'visible' and well - known monster types.
One plot idea could be a new super monster arriving at the school. This new monster has a unique power that the others have never seen before. It could create some chaos at first as the other super monsters try to figure out how to get along with this new addition. Another idea is a time - traveling adventure where the super monsters go back in time to meet their ancestors and learn about their own powers' origins. And a third idea might be a mystery where the super monsters' powers start to disappear one by one, and they have to work together to find out what's causing it.
One idea could be a character from the Enclave finding themselves in a situation where they have to team up with a group from the Fallout world they usually oppose. Maybe a lone Enclave soldier gets separated from his unit and is forced to rely on a group of wastelanders to survive. This could lead to a lot of character development as he sees a different side of the world outside the Enclave's ideology.
One idea could be a story about a new student at Pokemon University who discovers a hidden ability within their starter Pokemon that no one has ever seen before. This could lead to all sorts of adventures as they try to figure out what it means and how to control it.