AltPlot is a unique service that emails you personalized fanfiction stories based on your preferences. You submit a request, receive a custom-written chapter within 24 hours, then reply with your input—either through predefined buttons or free text—to guide the story’s direction. The service continues this interactive loop, allowing you to shape the narrative as much as you want. It’s perfect for fans who want a more immersive and personalized storytelling experience.