For half a century, American conductor and composer Leonard Bernstein and Austrian conductor Herbert von Karajan were the world's most celebrated figures in classical music – and the fiercest of rivals. Late in their lives these titans of classical music unexpectedly crossed paths one last time at the Sacher Hotel in Vienna. Inspired by true events, "Last Call" brings us to this meeting as both men struggle to find common ground through their music and their lives over one last drink.