After squandering his inheritance, playboy Jerry Waters loses all of his possessions except for his car. Accompanied by his chauffeur and friend, Donovan, Jerry applies for a job at the Federated Bus Line, where he is turned down when he irritates Ted Dawson, the boss's daughter. Plagued by an unexplained rash of accidents and breakdowns, the bus line is in danger of losing its franchise, and Ted believes that their recent misfortune is linked to the fact that her father has sent his partner, Talbot, to prison for embezzlement. After Ted refuses to hire Jerry, Joe Miller, Federated's general manager, refers him to Sid Casey, the manager of a wildcat taxi company that is in league with Miller to run the Dawsons out of business. Casey hires Jerry and his car, and orders him to rent a room nearby at Ma Talbot's boardinghouse. Ma, who is Talbot's wife, is the brains behind the operation and is plotting revenge for Dawson's imprisonment of her husband. Ted, suspicious of the taxi service, poses as a passenger, and during her investigation she meets Jerry and warns him about the wildcatters. Meanwhile, Donovan, who is now driving a bus for the Dawsons, is forced off the road by a car full of wildcatters. In the accident, passenger Davis is injured, thereby arousing Donovan's suspicion. When Donovan discovers that Davis is working for the wildcatters, he warns Jerry, who quits. To prevent Donovan from testifying in court, Davis and the others injure him in an accident, and when Jerry sees Davis driving away, he joins forces with Dawson and his crew to bring the wildcatters to justice. Dawson and the others follow Jerry to the boardinghouse, where Dawson learns that his tormentor is Talbot's wife. As Ma points a gun at Dawson, she falls down the stairs to her death and soon after, the police arrive to arrest the wildcatters. With Casey and the others under arrest, Federated Bus Lines resumes peaceful operations and Jerry and Ted decide to wed.