Quirky and funny second grader Ellie May can't believe her class is allowed to celebrate April Fools' Day--so long as it's done in good fun. She absolutely loves the idea of targeting a certain someone--the practically perfect Ava. Practicing on her parents and sisters, Ellie May begins to brainstorm harmless pranks. Soon enough, good intentions turn the classroom and her home upside-down when fake ants, trick tape, and hidden surprises don't go as planned. Ellie May may not be perfect like Miss-Know-it-All Ava, or calm and rational like her best friend Lizzy, but she's good-hearted and eventually realizes that the best trick is to make friends genuinely laugh--at no one's expense.