Film portrays the expedition of the British explorer David Livingstone to Africa to discover the source of the Nile, his disappearance, and the expedition to find him led by Stanley.
In London, August 1914, Austrian star Elsa Duranyi (Gertrude Michael) and English matinee idol Alan Barclay (Herbert Marshall) are in love and plan an immediate marriage.
Paddy O'Riley and Ossie Merrill, Bellport high school football heroes, enroll in distant colleges; Paddy at a small school in the East, where he is barely a substitute, and Ossie at a powerhouse-football school, where he is an instant star and all-American candidate.
Frankie Reynolds (Frankie Darro' ), youngest member of a family of jockeys, borrows $4.85 (yes, four dollars and eighty-five cents) from his sister Phyllis (Gladys Blake), who is not a jockey, to buy a crippled colt from the stables owned by Clay Harrison (Kane Richmond).
Someone is murdering the cast and crew of a new Hollywood movie, and the leading lady may be next. As a police detective locks down the lot and refuses to let anyone leave, the studio’s publicity head and his secretary attempt to solve the murders themselves.