THE VOID HAS ALWAYS EXISTED: "NO PLACE. THE SILENT REALM. THE LOST DIMENSION." THE ENDLESS, EMPTY SPACE BETWEEN UNIVERSES. BUT THE VOID IS NO LONGER EMPTY.  A SPARK HAS BEEN LIT IN THE EMPTINESS - A SPARK NOW GROWN INTO AN ENTITY POWERFUL ENOUGH TO SHATTER CREATION. THE VOID IS HUNGRY. AND IT IS ALREADY HERE.  THIS IS A THREAT BIGGER THAN US. IT'S MORE THAN ONE DOCTOR CAN HANDLE - AND EVEN THE DOCTORS ALONE MAY NOT BE ENOUGH! THIS IS THE LOST DIMENSION!