More than a million adoring fans have followed their lives on Instagram since the day Noah publicly proposed to Emily. But behind the carefully staged photos and encouraging posts, their life is anything but a fairytale, and Noah's obsession with social media has ruined everything. Distraught, Emily reaches out to her friend Kari Baxter Taylor and tells her the truth: Noah and Emily have decided to call it quits. He is leaving in the morning. But when Noah wakes the next day, everything is different. Emily is gone and the kids are years older. Like Scrooge in A Christmas Carol, bizarre and strange events continue throughout the night so that Noah is certain he's twenty years older, and he is desperate for a second chance. Now it would take a miracle to return to yesterday.