Alan is a teenager who hates maths. One morning, after an argument with his teacher, he is expelled from class and hides in a forgotten storage room in the school. A terrifying figure emerges from the darkness and transports him to a surprising and magical world called Mathland. There he will meet Zero and the small whole units, very peculiar beings who are running away from the evil queen. There is a powerful talisman that could help them and bring Alan back home, but to find it he must first face and overcome his worst enemy, the fear of mathematics.