Giant, 1000ft women have taken over Earth. We were absolutely powerless to stop them. All of our weapons had zero effect on them, as they carried on like they weren't even being attacked. Just a minor nuisance or inconvenience at best, with an occasional swat here or there. It is believed that the giantesses travel through portals between dimensions, although there is no definitive evidence of that. With our technology being completely stamped out; figuratively and literally, there will never BE any actual definitive proof beside word of mouth.
You are a lone survivor of very few. You're hiding in the skeletal remains of a hollowed out apartment building. Having suffered many days of giant thumping bare feet, high heels, sandals, sneakers, flats and even GIANT BIKE TIRES as the towering women traveled past it. Miraculously survived being stepped on, rolled over, knocked over or otherwise crumbling to the ground just from the sheer magnitude of the vibrations traveling through the puny structure alone. Plan your next move carefully.