It all starts with the death of Martijn van Vliet's wife. His grief-stricken young daughter, Lea, cuts herself off from the world, lost in the darkness of grief. Then she hears the unfamiliar sound of a violin playing in the hall of a train station, and she is brought back to life. Transfixed by a busker playing Bach, Lea emerges from her mourning, vowing to learn the instrument. And her father, witnessing this delicate spark, promises to do everything and anything in his power to keep her happy.