Four sibling operate the last secure compound for miles, stocked with power, food, and everything else they could ever need to survive. Bound by a philosophy inherited from the patriarch of their family, the siblings believe humanity's future depends on carefully rebuilding the next generation. When various women arrive seeking safety, they are welcomed into the compound under one condition: survival comes with expectations, and each newcomer must decide whether protection is worth accepting the role the siblings believe destiny has assigned them.