On his fifteenth birthday, Matt receives a card from his mother – the mother he grew up believing was deceased. Feeling betrayed by both his parents, Matt’s identity is in disarray and he begins writing letters to Leonardo da Vinci as a way to sort out the ‘mess’ in his head. Through the connections he makes between his own life and that of Leonardo, Matt unravels the mystery that his life has become and discovers his mother’s secrets and the reasons behind his abandonment.