On the first day at his new school, Mathias is given the worst possible homework: write an essay about yourself – in Spanish. The timid Mathias struggles to find the words. A minor identity crisis – en español – was not his idea of a good start. However, the essay is quickly put on hold, as he discovers that the deaf girl from school is spying on him. Mathias tries to suss out her motives, but learns that the espionage is about more than mere curiosity.