It's the beginning of senior year, and Rooney's mom just lost her job. Even worse, she isn't planning to get another one. Instead, she's spending every waking moment with a group called the Next World Society, whose members are convinced they'll be leaving Earth behind on November 17. It doesn't seem sane to Rooney, but to her mother and younger brother it sounds like salvation.
As her mom's obsession threatens to tear their lives apart, Rooney is scrambling to hold it all together. But will saving her family mean sacrificing her dreams — or theirs?