It was hard for the Guardians to explain just what they were feeling.  A sense of urgency, powerful to the point of almost being physical.  A vague direction, eventually leading to a location not far from the Battersea Power Station.<br/><br/>The Guardians arrived one by one, all answering the same urgent call.  They arrived to find, nothing.  A strangely empty street overlooked by several buildings under construction.  The call told them they needed to be here, but as of yet there was no sign of why they had been called, or by who.