Everything in high school feels like the world is ending. And Sadie Mitchell's crippling fear of the coming apocalypse is the heightened version of that. Undeterred by non-believers, Sadie has created a check-list of things to master before the predicted doomsday, and she has just two weeks to complete it. Sadie needs to master survivalist cuisine, learn to sew, and a few more... personal things; go to a high school party, kiss a boy, and most importantly, get her best friend back.