Zombies

"AHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!" I shouted at the top of my lungs.  I was running down a dimly lit street.  5 or 6 zombies were chasing me.  I ran up to a door and knocked.  The door opened and a zombie stared down at me.  "AAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!" I shouted again.  I ran until I found an abandoned shop.  The shop was filled with explosives.  I grabbed C4, dynamite, and a rocket launcher.  I rushed out and aimed the rocket launcher at the center of the group of zombies.  Bang!  The zombies were hurled into the air and smashed against the sides of the nearest buildings.  More zombies appeared out of doorways and started chasing me.  Then a wizard floated in on a magic carpet and blasted all the zombies to smithereens.  "Hop on!" he shouted down at me.  I jumped up and we zoomed off down the street.  "We need to hurry!" he said urgently.  "If the portal's barriers are built properly we can never make the portal collapse!"  "What portal?" I asked as we narrowly missed a tree.  "The portal between our world and the zombies world of course."  "But first we must stop at my bunker to gather the supplies we will need!"  Ahead of us looming out of the gloom was a giant castle/bunker.  "Whoa!" I said in surprise.  "Is that yours?"  "Yes." he replied.