Dream of building, eyes, hands

There was this disaster outside and then zombies started appearing and i was with this random guy, my sister, and a dog. we ran into this building and we were in the middle floor. This building was really big and complicated, it was kind of like a maze but every floor was different. Like different companies rented out different floors and stuff. But then we get over run and we had to run down the stairs to get to the basement. It was pitch black down there and we managed to turn on the lights but we only managed to turn on so many and there were still parts of the basement in black. Now even within the basement there was two levels, the ground part and then like you could climb up to get on cat walks. Time passed, i dont know how long. But eventually the other guy that was with us wanted to leave so i went with him to the door and made sure when he left no zombies would come through the door. He leaves and then i go back to where the dog and sister are and all of sudden the dog is growling like crazy and it charges me and it had turned into a zombie im fighting the damn thing and i kill it with my bare hands. I quickly run to see find my sister and i found her turned also, and then i get into a really long fight with her. It took so long to kill her and she wouldnt die,when i did finally i just in tears and the guy came back and he said it was over. we ran up the stairs and left the building, and everything was back to normal outside. I was running around cause i couldnt believe it but all of a suddent i trip and fall.i had my eyes closed and i roll over on my back and all of a sudden im hear the ocean. I open my eyes and im laying on a dock, out of nowhere MY dog runs up to me and jumps on my chest and starts licking me and my sister is right there standing by me looking at me and my dog with a leash