A MAN AND A BIG BUILDING

i'm never think to have a exciting building..
a man give me a key. i said "what for this key man ??" .
and the man said nothing..
i don't know what make the man give me a key..
i think it is the key of building ..
i walk through the way and i saw the big building ..then i tried open the door ,,but i couldn't .
i tried open the door with the key from a misterious man .. and .. the door was opened ...!! and i walked into the housee ..
darkk ..
i couldn't see anyonee.. but i heared a little voicee .. and thenn i saw ...