My Three Sons - Season 11 (1970)

When Chip (Stanley Livingston) gives Polly (Ronne Troup) a necklace and locket, he thinks he has agreed to go steady with her. Polly tells her mother (Doris Singleton) it is for a marriage proposal. Her mother knows Polly's father (Norman Alden) will be upset.

Polly (Ronne Troup) has an argument with her father and decides to leave home. She goes to the Douglas' home and asks Chip (Stanley Livingston) to elope with her.

Steve (Fred MacMurray) dresses as a cat for his office's Halloween Party. As he drives home, he runs out of gas and has to walk to a gas station. The police pick him up as a suspect in a series of burglaries.

Chip (Stanley Livingston) and Polly (Ronne Troup) decide to finally elope. Chip tells Steve their plans, and he tells Chip he should give Polly's father a courtesy visit before they go to a minister. Polly's father is not pleased and accuses Chip of wrong doing.

Chip (Stanley Livingston) and Polly (Ronne Troup) are married, and on their way to Mexico for their honeymoon. They encounter car problems and hotel reservation problems, and have to spend their first married night in separate rooms.

Chip (Stanley Livingston) and Polly (Ronne Troup) return from their honeymoon and settle in their college dorm. Polly's father (Norman Alden) visits, but he refuses to talk to his daughter.

Barbara volunteers to organize a fashion show for a woman's club. She convinces Steve to be one of the models for some of the men's clothing. When he finds out the shirt is lacy and ruffled, he wants to back out of the show.

Chip's (Stanley Livingston) stomach does not agree with Polly's (Ronne Troup) cooking. She learns that she has been using foods that Chip is allergic to. She thinks she should leave Chip.

For a psychology class assignment, Ernie tries a few experiments on his family members. He cuts Uncle Charley's cane a little bit at a time, and Charley thinks he is getting taller. However, Steve is not as easy to fool.

Robbie (Don Grady) and Katie (Tina Cole) get a vacation in their own home, when her mother (Joan Tompkins) takes the triplets with her to St. Louis for a few weeks. Robbie and Katie make plans to do the many things they cannot do when the children are with them.

Robbie gets a visit from an old friend when he comes to town. His friend is full of exciting tales of traveling by motorcycle and seeing the sights. Robbie thinks it'd be good to go on a trip with him but Katie isn't so sure.

Dodie's (Dawn Lyn) school class has a new teacher (Peter Brown), and all the girls think he is a dreamboat. Her mother (Beverly Garland) used to teach him when he was a boy. Dodie's crush fades when he brings his fiancée (Linda Foster) with him to dinner.

Steve is in line for a promotion at work. Uncle Charley has some surprising information in his background.

Katie (Tina Cole) thinks Robbie (Don Grady) is seeing his secretary Cynthia (Ann Marshall) after work and gets jealous, after seeing Robbie kissing her.

Ernie and Elmore look forward to driving their girlfriends on a date after they pass their driving test and have licenses. However, the boys do not pass the test, and the girls do. Ernie & Elmore end up stranded at the end of the date.

Steve and Barbara go to San Francisco for a golf tournament, and Uncle Charley goes to a music festival, leaving Ernie in charge. He loses track of Dodie when she goes to town with a friend and has no money to get home.

Dodie (Dawn Lyn) decides to form a musical band with her friends, and practice will be held at the Douglas' home. The adults are not too pleased to have loud, bad music playing at their home.

Ernie (Barry Livingston) is involved in a fender-bender, when teenage girl Debbie (Brooke Bundy) hits his car. She seems to take an interest in Ernie, but might be more interested in not paying for the accident.

Ernie agrees to babysit Dodie while Barbara goes shopping. Dodie asks if she can visit a friend, but when Barbara returns home, Ernie does not remember where Dodie went. Both Ernie and Dodie get put in time-out.

Charley (William Demarest) looks forward to a visit from his former shipmate Tom (Arthur Hunnicutt), who could be depended upon for rowdy entertainment. However, when his friend arrives, he is now a mild-mannered gentleman.

When Robbie (Don Grady) is laid off from his job, he and his family move to San Francisco for a new job offer. Their new friends tell him he works too hard, and Katie (Tina Cole) starts to think it is because of her and the boys.