As classical music star Donald Runnicles returns to Scotland as chief conductor of the BBC Scottish Symphony Orchestra, Artworks Scotland goes behind the scenes to find out what makes a great maestro and what life is like in the ranks of one of the world's top orchestras. Opening with Runnicles' farewell performance as music director of the prestigious San Francisco Opera, this documentary reveals the usually private process of rehearsal as he prepares his new orchestra for an appearance at the largest classical music festival in the world, the BBC Proms in London.