Nan Masters, a single mother living with her four marriageable daughters, plans to marry Sam Sloane, businessman. Out of the blue her first husband Jim returns after deserting the family 20 years earlier. The worldly wanderer Jim gets a cool family reception at first but his warm personality gradually wins the affections of his four daughters. In fact, youngest daughter Buff, who has her eye on a maverick of her own in Gabriel Lopez, is pleased when Jim grants his stamp of approval on her relationship. Buff plans to elope with Gabriel on her mother's wedding day, but 'unpredictable' is Gabriel's middle name.

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