Bill Davis, owner of a successful construction company, is entertaining a date at his New York apartment. Then, Buffy, his niece and daughter of his dead brother, is brought to him. Bill is ambivalent about taking on this responsibility. He suggests sending Buffy to school in Switzerland. This prompts Buffy to run away, but she only makes it as far as the basement of his apartment building. Giles French, the Davis butler, finds her there and brings her back. Bill and Buffy have a talk, where Bill assures her she can stay if she wants. Until now, she has only called ...
When Bill returns from Africa bearing gifts, Cissy presents him with a hand-knitted tie. Buffy and Jody also want to give Bill a gift, and end up purchasing a horse for him from a retiring carriage driver.
Bill decides to send Cissy to a private girls' school in Connecticut, and even though she would prefer to attend high school locally, she reluctantly agrees to go, thinking Bill wants to get her out of the way.
When Bill gets Cissy her own phone and arranges for an interior decorator to redo Cissy's and Buffy's bedroom, Buffy becomes withdrawn as the changes appear to separate the room and, as a result, she fears Cissy is separating from her.
Buffy leaves Mrs. Beasley with Mr. French, who accidentally knocks the doll off the terrace. When Bill learns from Cissy the importance of Mrs. Beasley to Buffy, he goes on an earnest search to find the doll.
The vice principal and a child psychologist are concerned that Buffy and Jody only spend time with each other instead of playing with the other children, and state that it would be better for them to spend less time together.
Cissy thinks Bill is planning to get married to an old friend, but when her new friend tells her how her stepmothers sent her away, Cissy then suspects that the woman will send her and Buffy and Jody away.
Restless, Bill takes a job in the Yutacan, but then starts to miss the family. It gets worse when he is led to believe, through miscommunication by phone, that Mr. French has the flu and Buffy and Jody are left to take care of him.
Cissy develops an infatuation with her school teacher who teaches philosophy and spouts big ideals that everyone should follow. Bill finds a way to show that the teacher is just a regular man with faults.
Jody talks about having a job with a man who builds buildings and even gets paid for it. Uncle Bill thinks he is making it up. Bill later meets the man and realizes it is the person he has been trying to meet for a construction project.
Giles French leaves town for a month, so his brother Niles comes to help with the Davis'. Jody is tired of always being around the girls and having to do the things they want to do. Uncle Bill decides to give him some masculine attention.
Jody & Buffy are excited to be moved to Upper First Grade at school, but it means more homework. They do not know how to do the math problems nor read some of the new books. Bill is spending more time dating than helping the twins.
Buffy & Jody have problems with a building project for a school. Bill is hosting a large dinner party, and French has to hire an assistant to help serve the food. Adele turns out to have no experience and only makes things worse for French.
When Bill has to babysit Buffy and Jody, he tells friends that he is stuck with the kids. Buffy overhears this, and the twins start to decide if they should stay with Bill or move to their Aunt Fran's place.
Buffy & Jody's new friend at school has them doing things differently. When Marilyn visits, Bill and French learn she speaks only Mandarin, and the kids communicate through child-speak. French tries his rusty mandarin and insults her.
Uncle Bill and French look forward to a week of quiet when the three children are at different camps during a school break. After a few days, Bill and French realize they have grown used to the noise and chaos of children at home.
Bill takes a week of vacation and plans activities for each day. The Rodeo is in town, and Bill's friend Gabe is one of the cowboys. Bill invites Gabe to stay with them, and the twins want to do everything with him.
Bill thinks the twins take advantage of him and French because they give in to their every wish. Bill says to deny the twins sometimes so they do not get spoiled. Buffy & Jody make a trophy for their uncle, but get sick from the clay.