The idea is to build a story that everyone collaborates to and it's based on the popular internet forum game Three Word Story
Here jsonbin.io's API is used
Just replace the <YOUR_SECRET_KEY_HERE> and <YOUR_BIN_API_ID_HERE>
fiels in the javascript code
Then just use any backend for the static website and you are good to go.
You can get these keys from here
Moreover the json has to be formatted in the following way :
{
"type" : "story",
"content" : "<STORY_WILL_BE_PLOTTED_HERE>"
}