One possible plot could be that Inuyasha and his friends are somehow transported to the world of The Walking Dead. Inuyasha's sword, Tessaiga, could be effective against the zombies as it can cut through almost anything. They could team up with the survivors in the Walking Dead world. Kagome's spiritual powers might also be useful in detecting the zombies from a distance or even purifying them in some way.
A plot could revolve around a time - traveling device that brings Daryl from The Walking Dead to the feudal era of Inuyasha. He teams up with Inuyasha to fight off demons that are similar to the zombies in his world. Daryl teaches Inuyasha and his friends some survival skills from his world, and in return, Inuyasha shows Daryl how to use a sword more effectively. Kagome helps Daryl understand the magic and spiritual aspects of their world, and they all work together to protect both their worlds from threats.
One possible plot could be that the zombies from The Walking Dead somehow end up in the Naruto world. Naruto and his friends have to use their ninja skills to fight off the hordes of zombies. Maybe they could also try to find a cure using their knowledge of chakra and medical ninjutsu.
One possible plot could be that Zoey, who might be a survivor with unique skills like being an excellent tracker. She could cross paths with the main group from The Walking Dead. Maybe she has a cure or a lead on a safe haven that she's trying to reach. Along the way, she has to deal with the same undead threats and the complex human relationships that are characteristic of The Walking Dead world.
One possible plot could be that Batman finds himself in the world of The Walking Dead. He uses his detective skills to figure out the origin of the zombie outbreak. Maybe he teams up with some of the survivors like Rick. He'd use his gadgets to defend against the walkers. For example, his batarangs could be used to take out walkers from a distance.
One possible plot could be that a powerful dark magic spell goes wrong in the Harry Potter world and creates a portal to the world of The Walking Dead. Harry, Hermione, and Ron find themselves in this post - apocalyptic world filled with walkers. They have to use their magic skills to survive, like using the Stunning Spell to immobilize walkers and the Fire - Making Charm to keep the walkers at bay at night. Meanwhile, some of the survivors from The Walking Dead world are in awe of their magic and start to learn from them, creating a unique bond between the two groups.
One possible plot could be that a spell gone wrong in the wizarding world accidentally opens a portal to the world of The Walking Dead. Harry Potter and his friends find themselves in this post - apocalyptic world. They use their magic to fight off the walkers, but also face moral dilemmas as they interact with the survivors who have no concept of magic. Hermione might try to find a scientific explanation for the walkers while Ron is more focused on survival and getting back home.
Maybe the main characters of both shows meet in a post - apocalyptic city. The more science - minded characters from 'Z Nation' try to study the walkers from 'The Walking Dead' to see if there are differences in the virus strains. This leads to a series of adventures as they protect each other from zombie attacks during the research.
One possible plot could be that Naruto and his friends somehow end up in the world of The Walking Dead. Naruto's ninja skills would be really useful in fighting off the zombies. He could use his shadow clone jutsu to create distractions while they look for supplies or a safe place. His friends like Sakura could use her medical skills to treat any survivors they come across. And Sasuke could use his sharingan to detect any hidden threats, either from the zombies or from other groups of survivors.
Well, imagine the ninjas in the Naruto world are suddenly faced with the same post - apocalyptic situation as in 'The Walking Dead'. Sasuke might be off on his own initially, thinking he can handle the zombie threat alone. But Naruto would be all about bringing people together, like the Konoha villagers, to build a safe haven. They could learn from each other's survival skills. The zombies in this crossover could be extra tough, with some having chakra - like abilities because of the different world they are in now.
A plot could involve a spell gone wrong in the Inuyasha world that opens a portal to the Disney realm. Kagome, being from a more modern world, recognizes some of the Disney elements. Mickey Mouse could be the first Disney character they meet. He helps them navigate this new world while Inuyasha is trying to find a way back home. Meanwhile, Disney villains might see Inuyasha as a threat and try to get rid of him. But Inuyasha, with his combat skills, manages to fend them off. In the end, they find a way to close the portal and return home, but not before creating some new friendships and memories.
One interesting plot could be that Naruto and his friends are on a mission and accidentally end up in Inuyasha's feudal Japan through some sort of magic portal. There, they meet Inuyasha and his group. Naruto's ninja skills could be put to the test against the demons Inuyasha usually battles. And perhaps they team up to defeat a powerful common enemy, like a super - strong demon that neither group could handle alone.