Fewer than 200 Master Sommeliers have been named since the Court of Master Sommeliers was created in the United Kingdom in 1969; the three portions (Theory, Tasting, Service) are intense, and preparation for the exam happens months—and sometimes years—ahead of time. The single-minded dedication and rigor of the test candidates is not in and of itself novel; it’s the way director Jason Wise manages to build an engaging story out of something that could easily have been as dry as an Old World Sauvignon Blanc.