Rafe Khatchadorian is counting down the days to summer—until bad grades threaten him with summer school. To dodge it, he takes on a zoo job, but quickly finds himself scrubbing toilets, dodging angry peacocks, and messing up a billionaire’s clambake. Just when it seems like another epic fail, an encounter with an endangered lion gives Rafe a chance to prove himself—for real. This time, it’s not just his grade on the line.