One idea could be that they all end up in a shared dreamscape created by Freddy. In this space, Jason and Michael have to team up to fight Freddy's mind games and try to escape while also dealing with their own instincts to battle each other. Another could be that a powerful sorcerer summons them all to a modern city and they start wreaking havoc, and a group of brave humans try to use their knowledge of each slasher's weaknesses to stop them.
A possible plot for freddy vs jason vs michael fanfiction is that a mad scientist tries to clone all three of them. However, the clones have a bit of a different nature. The originals then have to fight not only the clones but also each other. This could lead to some interesting battles where they have to use new strategies. Also, the story could be set in a post - apocalyptic world where they are the last 'rulers' left and are fighting for the few remaining survivors as their prey.
The best chapter pointer here is Chapter 198, "Jiang·Deceitful·Li is Verified". It opens with He wrapped his arms around himself and stepped back half a step, eyeing... and closes on How is that possible?" "Because I've calculated it, there are no Task....
If you want the clearest chapter reference, go to Chapter 219. Early on, Qi Tianyu was somewhat freaking out.; later, the chapter leans on The eagerly anticipated bed of roses had turned into pink roses..
Chapter 154 is the strongest chapter-level answer because it starts from Hahaha, I'm dying of laughter, Lili, do you really have to be so blunt?"... and follows through on Helplessly, Director Sun could only grit his teeth and add another 5....
If you want the clearest chapter reference, go to Chapter 173. Early on, Jiang Li finally rose from her seat.; later, the chapter leans on Seeing her stand up, He Yun also stood up..
Chapter 202 is the strongest chapter-level answer because it starts from Jiang Li couldn't believe it, "Just to take a picture?" "Yes, just to take... and follows through on Give me the card." She stretched out her hand expressionlessly..
The best chapter pointer here is Chapter 207, "Keep these thirty points for yourself, I don't need them". It opens with After finishing, Sister-in-law Lan quickly took out the Good Evaluation... and closes on She had taken care of them for a longer time, she hadn't even had lunch,....
If you want the clearest chapter reference, go to Chapter 172. Early on, Not only Shu Yan, but the entire internet was shocked when they saw Su...; later, the chapter leans on Damn, what brand of make-up is Su Yinwan using?.
Chapter 182 is the strongest chapter-level answer because it starts from At this moment, Qi Tianyu, who had just arrived in the Capital, couldn't... and follows through on But Director," the assistant said, "are you really going to let them keep....
Look to Chapter 174 for the clearest answer. It begins with Does Young Master Jiang really care why I would come here?, keeps building through I'm here for the same reason you are." He had previously suspected the..., and lands on She knows the camera is on her, how can she still..." Jiang Li.