It's the early 1600s, and the streets of Italy are bustling. But Michelangelo Galilei, the much younger brother of well-known Italian philosopher and scientist Galileo Galilei, feels lost in the crowd. It seems as though Michelangelo has nothing in common with his older brother. Michelangelo spends countless hours practising his lute, while his brother seems to spend all his time testing long-held scientific beliefs. Then Galileo improves a small telescope, opening up a whole new world to them both. But will it be enough to fill the expanse between them?