I kinda wanna ramble about my show's lore because I'm bored and I should probably be asleep
1: So humanity and several other creatures are wiped out by Yellowstone farting (aka completely annihilating Yellowstone national park and putting ash in the air, which stirs up a deadly famine and vegetation loss) and then over the course of 20 millenia new species evolve to replace those that died out in the Yellowstone mass extinction, but nothing arose to replace humanity, yet. In a room with assorted inanimate objects the mystery substance leaking in slowly for centuries did some weird ass shit and brought the objects to life. They attempted to repear the decay to their bodies and examined their surroundings, They were in once was a city left to rot by humanity's extinction. Years passed and the population began growing in theor early civilization. Some objects went to colonize elsewhere while most stayed behind. For 3 days straight a group of 20 individuals walked through harsh weather and terrain. Leaving 7 survivors. They couldn't go back.