A trumpet player in a radio orchestra falls asleep during a commercial and dreams he's Athanael, an angel deputized to blow the Last Trumpet at exactly midnight on Earth, thus marking the end of the world.

Jack Benny
as Athanael

Alexis Smith
as Elizabeth

Dolores Moran
as Violinist / Fran Blackstone

Allyn Joslyn
as Second Trumpeter / Osidro

Reginald Gardiner
as Composer / Archie Dexter

Guy Kibbee
as Radio Director / The Chief

John Alexander
as First Trumpeter / Doremus

Franklin Pangborn
as Radio Engineer / Sloan

Margaret Dumont
as Mme. Traviata / Miss Rodholder

Robert Blake
as Junior Pulplinsky