Sam Purdy receives a summons to testify before a grand jury, and not realizing that the matter concerns sheep-stealing he assumes it to concern the murder of his brother, Will.

Laurie Devon is a New York playwright who, having had one success, refuses to work on another play.

Jefferson Todd and Louis Castiga, brothers-in-law, come to blows on a Mississippi River steamer when Todd discovers Castiga's presence there with a woman.

A ranger joins the outlaw gang whose boss he believes is a murderer.

The female head of a criminal gang in Chinatown is after a valuable jewel, and lets nothing stand in her way of finding it.

Chet Kasedon is after the Indians hidden gold mine but Chief Moya will not reveal it's location. He has also hired mining engineers Gale and Mortimer to locate the mine. When Gale sees Kasedon's cruelty to Moya, he switches sides.

Doctor Smith and his wife, Mary,depart a riverboat and are met by Phil Talbot. Phil informs Dr. Smith that Jessup, the only other white man in the village, has died while the doctor and his wife were off on a two-day holiday. Unknown to Smith, Jessup and his partner, Ross King, had a large cache of ivory tusks in the jungle, and he had told Phil about it. Meanwhile, Mary Smith has decided to steam-boat down the Congo River to Capetown for an extended holiday. Kuba, King's gun-bearer, asks Smith to write a letter to King, currently residing at a New York City Explorer's Club, and advise him that his partner has died. Talbot sends a letter to his stateside sweetheart, Diane Cameron, and her father, asking them to come to Africa and join him on an ivory-treasure expedition, and replenish their family-fortune lost in the recent stock-market crash. What Mr. Cameron and Diane don't know about Talbot is that his years in Africa have unhinged him...