⁣ A government space experiment into the effects of cosmic rays on animal life goes horribly wrong, creating a mutant monster that terrorizes a rural community.

⁣BONANZA - The Courtship

⁣An elderly prospector finally strikes gold, but before he can file a claim, he is killed by a pair of drifters who stampede a wild horse herd over the man's body to hide their crime. The sheriff believes that Champion is a wild killer and tries to have him shot!

⁣Local ranchers think that gypsies are stealing horses. Then Fury is rustled which leads to the truth.

⁣Joey befriends a new boy in school, but the friendship is discouraged by the boy's demanding father who requires his son to spend all of his free time studying in order to excel in school.

⁣A young Indian Doctor attempts to practice medicine while the townspeople practice intolerance.

⁣Hawkeye has tracked outlaw Simon Girty to Morristown but he and Chingachgook are turned away and told that the town is closed due to an outbreak of the black plague. Hawkeye decides to sneak in and see for himself.

⁣Billy the Kid (Buster Crabbe) and Fuzzy Jones (Al St. John) are on their way out of Arizona being chased by some riders who hope to cash in on the reward money for their capture.

⁣Lambert owns the trucking line that ships cattle to market. When he raises his rates Roy decides to ship the cattle on the River Boat. When Lambert and his men are unable to stop the boat, they rustle the cattle.

⁣ Grant hides stolen money in the luggage of Bonnie Shea who is moving west. Later when he and his men arrive to retrieve the money, they also kidnap Bonnie. This sends Reasonin' Bates and his cowhands on their horses after the gangsters in their cars.