Classmates at the Los Angeles police academy, Chuck O'Fair, Russ Hartley and Harry Whenlon bond as friends. When they socialize at one's house, Russ and his wife, Mary, observe as the extroverted Chuck expresses an interest in Mary's sister, Jane, who seems to prefer the shy Harry instead.
The three rookie cops become bored on the job. Seeking more action and excitement, they perk up after hearing from Sgt. Jumbo Culdane about the police department's motorcycle squad. Mary is skeptical, fearing for Russ's safety, but all three take the necessary training and are assigned to the motorcycle highway patrol.
While chasing a truck together, Chuck's cycle stalls so Harry proceeds by himself. He is knocked cold by one of the men in the truck, which then backs over him. Chuck is devastated by Harry's death and persuades his superiors to let him work undercover to find the culprits.
Discovering that the men he's looking for are modern cattle rustlers, Chuck confronts them and kills one before he is wounded. The other is taken into custody, and Chuck and Russ soon go back to work.
Ralph Meeker as Chuck
Robert Horton as Russ
Sally Forrest as Mary
Jeff Richards as Harry
Elaine Stewart as Jane
Keenan Wynn as Jumbo
According to MGM records the movie earned $365,000 in the US and Canada and $346,000 elsewhere, making a loss to the studio of $37,000.