Dissonance begins with piano practice. Fifteen-year-old Erwin Hergert is forced to tackle scales and studies for six hours a day by his mother, Madge, who is determined to produce Australia's first great pianist. To help Erwin focus, Madge has exiled her husband, Johann, to the back shed. Jo is diagnosed with cancer and Madge allows him back inside, but only for long enough to die.
Madge takes Erwin to Hamburg to continue his studies. Erwin prospers in Germany with his new teacher until he meets a neighbour, sixteen-year-old Luise, and finds there's more to life than music. ...