My Three Sons

Robbie (Don Grady) might not be able to play in his school's football game unless he can improve his grades in math. Also, Chip (Stanley Livingston) has a cold and later catches the measles.

Chip's 10th birthday party is in jeopardy when Steve comes down with German measles.

Steve's friend (Barbara Eiler) asks him to help find out who is dating her daughter (Brenda Scott). She thinks it is an older man. A mix up, caused by a borrowed fraternity pin, causes Steve to think it is Mike who is dating the daughter.

Chip gets the chance to visit his father's work place and to see what his father does for a living. Chip thinks the job is boring and of no consequence. However, when Steve is asked to help a pilot land a plane, Chip gets a different view.

Steve and Robbie go on a Caribbean cruise.

Robbie's new girlfriend talks him into a proposal.