Dream of children, screaming

I pulled up to a super market and got out of my car and noticed people screaming pointing up. I looked up and saw a horse shoe shaped air craft the size of a huge city. On top of the craft were huge sky scrapers and statues. I heard explosions go off and saw people running. I hurried to get home to my children when I saw 4 men exit a small craft and they were 7ft tall no less dressed in all white garments. They were black men. They took me and explained to me what was happening and why. They said i had to go with them to survive and they showed me glimpses of their home and told me they were here to destroy the earth and a certain group in it.