Doris Day's last movie so far is this amiable trifle, in which she plays a widow with three sons who marries convenient widower Brian Keith, father of teenage daughter Barbara Hershey, hence the arch title. The offspring object to the relationship, and mileage is gained from episodes like Day driving off in a trailer and leaving Keith in his underwear by the roadside. There's a tired 1960s gloss to the whole thing: when the only cast member that shines is a dog called Lord Nelson, it's easy to see why Doris called it a Day. TV trivia fans should watch for M*A*S*H's Jamie Farr as a hippie.

Abby McClure, a widow with three sons, and Jake Iverson, a widower with a teenage daughter, begin dating and eventually decide to get married. But they're not prepared for the hostile reactions from their children, who are not very excited about the new union between the two families.