The main questline for the first part of the Event was Jingle Bell Wreck. The main questline for the second part of the Event was Project After-Party Just like the Treehouse of Horror XXV Event, both parts of this Event had their own special currencies, Presents and Elf Bells. Each currency was collected in their own unique ways and were accumulated by the player to win special prizes from the Personal Prize tracks. Each respective currency was only available for the duration of that part during the Event.