Leo is totally fixated on numbers and counting everything, even the words in the story the teacher reads; Lea is the shy new girl who shares his desk, and spends all her time drawing--but one day, in the noise of the playground, an accident brings them and their obsessions together in the beginning of a friendship. With sensitivity and nuance, this tender friendship story illuminates the beauty in our differences and celebrates our connections to one another.

The words on each page accumulate by way of the Fibonacci sequence--1, 1, 2, 3, 5, 8, 13, 21, 34, 55--before descending back to 1.