For Sophie, curbs are like measles and chickenpox combined: simply terrible. The thirteen-year-old is in a wheelchair, faces obstacles daily, and is far too often reliant on help. Difficult questions occupy her mind, many of which relate to her being different. For some, no one has an answer, not even her best friend Marieke. A genius would need to help - someone like Leonardo da Vinci, whom her grandfather loves to talk about. When Grandpa Karl, a passionate tinkerer and craftsman, suggests visiting the brilliant painter and inventor in medieval Florence, the answers to Sophie’s questions suddenly feel within reach. Her disability cannot stop her from experiencing a great adventure...