Lucy is given time off from the bank to be a personal secretary for Milton Berle. When she overhears a conversation over an intercom, she believes he is planning an affair with actress Ruta Lee. Feeling disgusted, Lucy lets Milton know exactly how she feels about his indiscretion.
Lucy fakes an illness to attend a big sale at a department store. When she enters the doors, she finds out she is the 10 millionth customer, winning all sorts of prizes. But all is not wonderful when Mr. Mooney sees her picture in the newspaper the next day.
Lucy jumps at the chance to help a handsome Italian movie star dictate a letter. But when she drinks a bit too much champagne, she comes close to losing her job.
Lucy is assigned to show Mr. Cheever's nephew Tommy, around the bank and get him acquainted to the business. But along the way she discovers he really wants to be a performer and has a great singing voice. Lucy invites a producer into the bank who unknowingly will be hearing an audition.
A new bank policy requires all employees to be high school graduates. Lucy had never finished with her education and must go back to class.
Jack Benny agrees to move his money to the bank if Lucy can prove that their vault is safer than his.
Mr. Heatherton, the elderly bank president has arrived for a visit. Mr. Mooney asks Lucy to masquerade as Amelia Van Dyne, an old woman as an escort for Mr. Heatherton since Mr. Mooney had forgot to set up a date for him.
Chuck Willis, a poor trucker is denied a loan from the bank. Lucy suggests he enters a Robert Goulet look-a-like contest to win some money.
Lucy adds 48 cents to the bank till to even out the books. When Mr. Cheever hears of what is going on he fires Mr. Mooney, feeling he had a part in the cover up. Lucy tries to make Mr. Cheever feel he is going nuts in order to get Mr. Mooney reinstated.
Lucy receives a letter stating that someone is coming for a stay but accidentally tears up the note before reading who sent it. The writer was her health conscience Aunt Agatha, who has strict rules about nutrition and exercise for everyone to follow.
Lucy gives a bum a hot meal and asks Mr. Mooney for a job in the bank to get him back on his feet again. Meanwhile, Mr. Mooney overhears that a millionaire has been posing as a vagabond and handing out money to Good Samaritans.
Lucy is injured when she works at the home of Mr. Mooney and plans on suing him for her pain and suffering. She enlists the services of an attorney, a cousin of Mary Jane, named Willy Wiley. Willy is a shyster who sees a fortune to be made in this case and plans on suing Mr. Mooney for all he has.
Lucy enters a billiards competition at a local pool hall. Her opponent, Laura Winthrop, looks vaguely familiar though to her, in fact she looks a bit like Ace, a pool hustler.
Lucy attends a flight attendant school and is paired up with Carol Tilford, a woman who is afraid of heights. Trouble ensues on their first flight as the passenger's film breaks. Lucy and decide they can save the day by entertaining the passengers themselves.
Lucy and Carol have earned their flight attendant wings. Meanwhile, Mr. Mooney asks them to team up with Buddy Rodgers and Richard Arlen from the silent film classic Wings, to perform in a stage musical.
Viv returns to nurse Lucy who has broken her leg. But it's Mr. Mooney who looks more like a Florence Nightingale after Viv falls and breaks her leg also.
Having broken Mr. Mooney's television she borrowed, Lucy takes on a job as a carhop at a drive-in. When a motorcyclist she encounters is accused of stealing cars, Lucy takes it upon herself to stand up for him.
While at a bank convention, Mr. Mooney encounters dome innocent flirtation with a woman. When she comes to L.A., she insists that he had made promises of marriage to her. Lucy pretends to be Mrs. Mooney to portray how wicked a man he really is.
A business dealing with a shady character for a fur stole has Mr. Mooney landing in jail for theft. But when Lucy gets involved in proving his innocence, they find themselves being arrested over and over again.
Lucy brings home a drunken, lounge singer in hopes of drying him out. With her help, he finishes a "could be" hit song, if Lucy's singing doesn't drive him to drink again.
When Ken is denied a loan from the bank to open a dance studio, Lucy attempts to help him out by getting him some much needed publicity. Her idea is to take a bunch of truckers and turn them into dancers in front of reporters.
Lucy and Viv get the wrong idea when they knock on the door of Joan Crawford and see her home empty of any furniture. They believe she has fallen on hard times but do not know she is really having it restored.
There is a forger running around town who looks like Sid Caesar. Sid asks for Lucy's help in catching him while working at the bank.
Lucy campaigns for Mr. Mooney to be named "Boss of the Year" to ensure his chance of getting a job as president of a bank in San Fransisco.