It’s ball season in Vienna, and Maria Wallner only wants one thing: to restore her family’s hotel, the Hotel Wallner, to its former glory. She’s not going to let anything get in her way, especially not the broad-shouldered American foreign agent who has saved her life two times already. Eli Whittaker also only wants one thing: to find out who is selling American secret codes across Europe, arrest them and go home to his sensible life in Washington, DC. But when he arrives in Vienna, he is immediately swept up into a chaotic whirlwind of balls, spies, waltzes and beautiful hotelkeepers who seem to constantly find themselves in danger. He disapproves of all of it! But his disapproval is tested as he slowly falls deeper into the chaos --- and as his attraction to said hotelkeeper grows.