Homestuck DND campaign HELP ME!!!!! PLEASE!!!!!!

OK SO. I HAVE DECIDED TO MAKE A HOMESTuCK DND CAMPAIGN WITH A FEW BuDDIES. EVERYONE HAS MADE TROLL OCS BuT THE PROBLEM IS.... I DONT HAVE ANY IDEA WHAT TO MAKE THE END GOAL OR THE STORY. IVE THOuGHT ABOuT DOING SBuRB BuT HOW THE HELL DO I EVEN GO ABOuT THAT???? ESPECIALLY WHEN I DONT *REALLY* WANT THEM SEPERATED. THIS IS MY FIRST TIME DM-ING SO IM ALL KINDS OF NERVOuS.

ANY IDEAS FOR THE STORY/END GOAL WOuLD BE HEAVILY APPRECIATED. OR JuST DM ADVICE IN GENERAL. THANK YOu FOR READING.