Upon the sudden death of his estranged and nearly-divorced wife, absentee father Tom claims ownership of his three children, seemingly more from spite against his in-laws than out of consideration for his kids. When youngest son Robert runs off in reaction, he's returned by spoiled socialite Cinzia, who's been itching to escape her orchestra-conductor father's dictates. Being a willful child herself, she harmonizes immediately with the kids and, needing a hideout, agrees to be hired on as their nanny. Finding their new house destroyed by a lustful, careless irresponsible Italian handyman, the five decide to live on the man's neglected and dilapidated houseboat rather than rightfully sue him and take rooms at a hotel. As Cinzia bridges the gap between Tom and his kids while starting to learn how to cook and clean, Tom's newly-divorced sister-in-law Carolyn makes a play for him. He accepts her proposal, but as Cinzia draws men in like a dog in heat, he realizes that he's more interested in Cinzia.
—statmanjeff