The trustees of Midwestern University have forced three teachers out of their jobs for being suspected communists. Trustee Ed Keller has also threatened mild mannered English Professor Tommy Turner, because he plans to read a controversial piece of prose in class. Tommy is upset that his wife Ellen also suggested he not read the passage. Meanwhile, Ellen's old boyfriend, the football player Joe Ferguson, comes to visit for the homecoming weekend. He takes Ellen out dancing after the football rally, causing Tommy to worry that he will lose her to Joe.

A retired auto manufacturer and his wife take a long-planned European vacation only to find that they want very different things from life.

Mary Smith decides after a lifetime of being a shut-in to do something wild while her father is out campaigning for the presidency, so she takes off for the family's home in West Palm Beach and inadvertently becomes romantically entangled with earnest cowboy Stretch Willoughby. Neither the dalliance nor the cowboy fit with the upper class image projected by her esteemed father, forcing her to choose.

Dr. Paul Carruthers is frustrated because he thinks his employers, Mary Heath and Henry Morton, have cheated him out of the company's profits. He decides to get revenge by altering bats to grow twice their normal size and training them to attack when they smell a perfume of his own making. He mixes the perfume into a lotion, which he offers as a gift to Mary and Henry. When they turn up dead, a newspaper reporter decides to investigate.

A wealthy society doctor decides to research the medical aspects of criminal behaviour by becoming one himself. He joins a gang of thieves and proceeds to wrest leadership of the gang away from its extremely resentful leader.

Denny breaks up with his fiancée Jean to marries wealthy Flora. When Jean is fired from her job she decides to market the face cream she invented. After sending it to twelve rich woman, only Flora decides to invest in the business. As Denny has no job, the girls give him an office at the factory. The business takes off, but Jean finds that she is still in love with Denny and Denny seems to forget he is married to Flora.

High-school principal Dr. Alfred Carroll relates to an audience of parents that marijuana can have devastating effects on teens: a drug supplier entices several restless teens, Mary and Jimmy Lane, sister and brother, and Bill, Mary's boyfriend, into frequenting a reefer house. Gradually, Bill and Jimmy are drawn into smoking dope, which affects their family lives.

A circus performer who falls in love with a rich car dealer's son, against her family's wishes. Features some spirited dance numbers with Ray Bolger.

A university chemistry professor experiments with an ancient Mayan gas on a medical student, turning the would-be surgeon into a murdering ghoul as part of a plan to steal his lover.

The Progressive Party convention is deadlocked for governor, so both sides nominate the dark horse Zachary Hicks. Kay Russell suggests they hire Hal Blake as campaign manager; but first they have to get him out of jail for not paying alimony. Blake organizes the office and coaches Hicks to answer every question by pausing and then saying, "Well yes, but then again no." Blake will sell Hicks as dumb but honest. Russell refuses to marry Blake, while Joe keeps people away from Blake's office. Blake teaches Hicks a speech by Lincoln. At the debate when the conservative candidate Underwood recites the same speech, Blake exposes him as a plagiarist. Hicks is presented for photo opportunities and gives his yes-and-no answer to any question, including whether he expects to win.