It's been more than 50 years since a tornado tore through a drive-in movie theater in tiny Mercer, Illinois, leaving dozens of teens -- a whole generation of Mercerites -- dead in its wake. So when another tornado touches down in the exact same spot on the anniversary of this small-town tragedy, the town is shaken. For Brenna Ortiz, Joshua Calloway, and Callie Keller, the apprehension is more than just a feeling. Though they seem to share nothing more than a struggle to belong, the teens' paths continue to intersect, bringing them together when they least expect it, and perhaps, when they need it most. Both the living and the dead have secrets and unresolved problems, but they may be able to find peace and move forward -- if only they work together.