When future class valedictorian, Carter Rose's favourite time of year rolls around, things just don't seem to be going her way. She definitely hadn't expected the apocalypse to break out on the last day of school, right before she could escape from the grasp of high school into summer break. Rohan Griffin is Carter's academic validation-obsessed co-valedictorian. His plans to earn the respect and appreciation of his father are impeded by the spread of an infection that makes humans behave in eerie cannibalistic ways. The unlikely pair must combine their brains and brawn so Carter gets her well-earned summer break and Rohan gets his long-awaited graduation ceremony...Oh and also as the fate of the world lies in their hands.