When Jenny boards her flight back from New York, the biggest things on her mind are applying to Columbia and reuniting with her brand-new boyfriend. But when she and the other passengers disembark in St. Louis, they're told that their plane disappeared-twenty-five years ago. Everyone thought they were dead. The world has fast-forwarded. Three of her grandparents are gone, her parents are old, and her “little” brother is now an adult. There's so much she's missed out on, not the least iPhones, social media, and pop culture. When some surprising information comes to light, Jenny feels betrayed by her family and once-best friend. She's also fighting her attraction to Dylan, a cute and kind classmate who has an unusual connection to her past. And then there's the growing contingent of conspiracy theorists determined to prove that Flight 237 hides a sinister truth. Will Jenny figure out how to move forward, or will she always be stuck in the past?