Dream of

I'm running in a extremely colossal square room that looks like a box. A string is chasing me and I don't know why, but I"m terrified. I come to the dead end at the corner of the box and there's a fence that won't let me run anymore and the fence reaches to the top of the box so I can't climb it. Then there's a shadow looking down at me and that's when I become terrified. I'm not sure who it is now but I knew in my dream and for some reason, I think it's my dad. Then the dream ends