Andy is about to head off to college but he's got a few things to take care of before leaving. For starters, he must try and sell his junk car for $20 to pay for a bill and he must convince his father not to go with him to college. Worst of all is that Polly wants to make up but her best friend decides to give Andy a test.

Andy Hardy goes to college after serving in the war and finds his sweetheart is engaged to someone else.

Judge Hardy takes his family to New York City, where Andy quickly falls in love with a socialite. He finds the high society life too expensive, and eventually decides that he liked it better back home.

Young Andy develops a crush on his drama teacher. When his play is chosen as the school's annual production, Andy seizes the opportunity to spend as much time as possible with his pretty teacher. Meanwhile, Judge Hardy has his own problems when he gets conned into forming a phony aluminum corporation.

Andy Hardy becomes entangled with three different girls all at the same time.

All set to graduate from high school , Andy Hardy flunks his English exam -- in spite of the fact that Aunt Milly is his teacher, and that the Judge has gone to all the trouble of getting him his very own private secretary.

With his high school graduation behind him, Andy Hardy decides that as an adult, it's time to start living his life. Judge Hardy had hoped that his son would go to college and study law, but Andy isn't sure that's what he wants to do so he heads off to New York City to find a job. Too proud to accept any help from Betsy Booth, Andy finds that living on his own isn't so easy. With perseverance he eventually finds a job and even gets to date the pretty receptionist in his office. He also has to face several of life's lessons leading him to conclude that he may still have a bit of growing up to do.

Judge Hardy goes to his friend's Arizona ranch to help her in a legal dispute, and he takes his family with him.

Judge Hardy guides Andy through problems with girls, money and an essay contest.

Andy Hardy and his sister find romance during a family vacation in Catalina.

Judge Hardy takes a business trip to Washington, DC, where Andy promptly falls for the French ambassador's daughter.

Judge Hardy faces problems at work and at home. Powerful men in town are upset with his decisions and want to see him impeached; his daughters, Joan and Marion, have romantic problems; and his son, Andy discovers Polly Benedict. As usual, Judge Hardy is concerned with everyone in the family and lends wisdom and calmness to all.