A pre-apocolyptic adventure accross the globe. Kim is a teenager with a knack for astronomy. Cana is a nerd's nerd but good with a gun. Belle is in love in Antarctica. And McCoy is a quipster locked up. They are all on the run from The Smiths, a 900-year-old murderous cult, out prevent the end of the world by finding an artifact known as the 7th Key.