Returning to school after winter vacation is usually tough, and Richard Best is already off to a terrible start. It is the middle of January with no snow in sight, and he has completely forgotten to bring a ruler for the highly anticipated dinosaur day. Just when things look bleak, Richard discovers a strange, mysterious ruler inside his desk. It features a set of dinosaur initials, and Richard quickly realizes this is no ordinary school supply. This ruler has actual magic powers. Suddenly, every single wish Richard makes begins to come true. Snow starts falling from the sky, he magically remembers all his homework, and the classroom bully even gets sick. But when the bully stays sick in bed for too long, Richard starts to feel guilty and worried. His only hope to reverse the spell is the magic ruler, but it has suddenly vanished. You will be captivated by this magical school story as Richard races against time to fix his mistakes.