No one is ever ready for zombie season. Joule refuses to evacuate with her mum. She can't leave town while her dad's still missing. But what if he's not just lost? What if he's become what she most fears? Regina is proud of her scientist parents for working on a weapon to stop the zombies. That is until she learns that the weapon that's supposed to help the humans might be doing just the opposite. Oliver knows there's something weird about this year's zombie season. But when the adults refuse to accept this scary truth, Oliver must find a way to sound the alarm. Something has changed, and time is running out ...