An adventure in the world of 4 operations, to discover the concepts underlying mathematics in a fun way.
The protagonist, poor Crocetta, expelled from the city of the typefaces that make up the books because she was considered useless.
Luckily, alongside her are her faithful friends Colon, Hyphen and X, who out of solidarity have chosen to share exile with her.
Their pilgrimage first takes them to the village of Numeria, where they get acquainted with a new type of letters, the Roman numerals. Resuming their journey, they will land in the City of Arabic numerals: there a new existence will open up to them. They will discover that they have a fundamental role, and from the outcasts they will become the symbols of addition, multiplication, subtraction and division.