Millie (Macdonald) is a brilliant young fund manager who decides to leave her unfulfilling job and long-term boyfriend behind to chase her lifelong dream of becoming an opera singer… in the Scottish Highlands. She begins intense vocal training lessons with renowned but fearsome singing teacher and former opera diva Meghan Geoffrey-Bishop (Lumley). It is there she meets Max (Skinner), another of Meghan’s students who is also training for the upcoming “Singer of Renown” contest. What begins as a brutal competition between Millie and Max slowly turns into something more…