EMP blasts started the apocalypse during Tom and his family's return flight home from vacation. Surviving the crash only caused them to confront the chaos of the apocalypse head-on. Even though they had survivor skills, and their ranch was set up to help them survive an apocalypse, the real apocalypse hits them hard. Tom has to break his grandfather's rule about never bringing outsiders into their family survival group to help them meet the unforeseen challenges life throws at them. He quickly adapts with the help of the additional survivors to increase the group's chance of surviving the end of the world, as he knew it.