The S. S. American is sailing between New York and England with a comically colorful assemblage of passengers: Reno Sweeney, a popular nightclub singer and former evangelist, her pal Billy Crocker, a lovelorn Wall Street broker who has come aboard to try to win the favor of his beloved Hope Harcourt (who is engaged to another passenger, Sir Evelyn Oakleigh), and a second-rate conman named Moonface Martin, aka “Public Enemy #13.” Song, dance, and farcical antics ensue as Reno and Moonface try to help Billy win the love of his life.