An unemployed drifter, Eric Stanton wanders into a small California town and begins hanging around the local diner. While Eric falls for the lovely waitress Stella, he also begins romancing a quiet and well-to-do woman named June Mills. Since Stella isn't interested in Eric unless he has money, the lovelorn guy comes up with a scheme to win her over, and it involves June. Before long, murder works its way into this passionate love triangle.
Pretty Girl Barbara Mededith takes over her murdered brother's crusading newspaper. She also assumes the dead sibling's identity as "The Black Whip," righting the wrongs of Crescent City very much in the manner of her famous ancestor, Zorro.
Insurance Investigator Roy is looking for Weston and the missing money he supposedly obtained in a robbery. When he catches him and listens to his story, he changes his mind about him. A freak accident locates the missing money box and they find the seal unbroken. Roy then announces the box will be opened at the showboat that evening.
Chip has inherited a supposedly worthless gold mine from her father and Craig Allen is about to buy it. Roy suspects the mine may be valuable and using a clue left by Chip's father, investigates. He finds the hidden shaft that contains the gold and with the posse chasing him on a trumped up robbery charge, races to town with ore samples hoping to get there before the ownership is transferred.
Julie's husband has been murdered and land agents want her to sign away her property rights. Hoppy warns against this but she does so anyway. It looks as though she will be unable to deliver the timber called for in her agreement. Hoppy has to make the lumber deal happened and solve the murder.
Construction workers in World War II in the Pacific are needed to build military sites, but the work is dangerous and they doubt the ability of the Navy to protect them. After a series of attacks by the Japanese, something new is tried, Construction Battalions (CBs=Seabees). The new CBs have to both build and be ready to fight.
Roy returns home to fine a range feud between the cattlemen and the sheepmen. When his friend is killed he finds the rifle had a defective pin. He learns the rifle belongs to a ranch hand named Barker and that a third party has caused the feud. When he captures outlaws trying to blow up a dam, he claims Barker was the killer. But Barker has switched rifles and the outlaws now accuse Roy and Roy finds himself in trouble.
Posing as a cattle buyer, Hoppy crosses over into Oklahoma where the Jordan brother's and their outlaw gang operate outside the law. After receiving an unfriendly reception when he finds them, he, California, and Johnny rustle their cattle and drive across the river into Texas. He hopes they will cross over to retrieve their cattle and then he can arrest them.
The Carson City Kid and partner Laramie are outlaws. When his partner is caught the Kid, his identity being unknown, takes a job in Jessup's saloon. Here he see Jessup cheat Waren out of his money. Warren then robs Jessup posing as the Kid but gets caught. To gain his freedom, Laramie identifies Warren as the Kid. Realizing Jessup is the man that killed his brother, the Kid must find a way to clear Warren and get Jessup.
Dr. Leon Kravaal develops a potential cure for cancer, which involves freezing the patient. But an experiment goes awry when authorities believe Kravaal has killed a patient. Kravaal freezes the officials, along with himself. Years later, they are discovered and revived in hopes that Kravaal can indeed complete his cure. But human greed and weakness compound to disrupt the project.
When transplanted Texan Bob Seton arrives in Lawrence, Kansas he finds much to like about the place, especially Mary McCloud, daughter of the local banker. Politics is in the air however. It's just prior to the civil war and there is already a sharp division in the Territory as to whether it will remain slave-free. When he gets the opportunity to run for marshal, Seton finds himself running against the respected local schoolteacher, William Cantrell. Not is what it seems however. While acting as the upstanding citizen in public, Cantrell is dangerously ambitious and is prepared to do anything to make his mark, and his fortune, on the Territory. When he loses the race for marshal, he forms a group of raiders who run guns into the territory and rob and terrorize settlers throughout the territory. Eventually donning Confederate uniforms, it is left to Seton and the good citizens of Lawrence to face Cantrell and his raiders in one final clash.