Fixated on preparing for the winter, squirrel Fae drags her brother Cyrus out to forage. When Fae leaves to hide an acorn, Cyrus comes face to face with a raven and a warning. In the dead of a warm and rainy night, millions of periodical cicadas emerge from the ground. Fleeing for their lives, Cyrus and Fae try everything to defeat them. Exhausted, and with no place left to run, they collapse – only to learn that the cicadas won’t win this fight.