Opera singer superstar Renato Rossano (Mario Lanza) is Conscription in the United States into the U.S. Army. His sergeant, "Bat" Batterson (James Whitmore), is an opera fan who admires Rossano and wishes Rossano to appraise his sister's (Doretta Morrow) singing voice. The rest of his platoon as well as the company commander disapproves of Batterson's showing favoritism to Rossano by excusing him from normal training.