In the wake of Pearl Harbor, a young lieutenant leaves his expectant wife to volunteer for a secret bombing mission which will take the war to the Japanese homeland.

Van Johnson
as Ted Lawson

Robert Walker
as David Thatcher

Spencer Tracy
as Lt. Col. Jimmy Doolittle

Tim Murdock
as Dean Davenport

Don DeFore
as Charles McClure

Herbert Gunn
as Bob Clever

Phyllis Thaxter
as Ellen Lawson

Stephen McNally
as 'Doc' White

John R. Reilly
as 'Shorty' Manch

Robert Mitchum
as Bob Gray