The story of The 100 follows a post apocalyptic Earth. Nuclear bombs were launched causing a deadly amount of radiation to be put into the air. Fast-forward 97 years into the future to a city in the sky that people fled to in the time the bombs were being launched. It is running out of air, so in an effort to try to find a solution the council decides to send 100 juvenile delinquents down to Earth to see if it is survivable; however they aren't alone on the seemingly abandoned planet.