weird swamp end of the world

Date: 8/17/2018

i was in a grocery store when all of a sudden there was a ton of creatures killing everyone from below, the grocery store was in a swamp and the floor was open and if you fell in you would hit water, everyone started picking out stuff they wanted, no one was paying for it, it was chaos. i started taking anything i wanted and then got on a boat to go look for help