Bachelor Bill Davis, A Highly-paid Engineering Consultant, Lives In A Posh Manhattan Apartment With His Proper English Manservant, Mr. Giles French (sebastian Cabot). Davis' Carefree Existence Is Turned Upside Down When His Brother And Sister-in-law Die Suddenly In A Tragic Plane Accident, Leaving Their Three Children Orphaned. Davis Becomes An Instant Father Figure To Six-year-old Twins, Buffy And Jody (anissa Jones, Johnnie Whitaker), And Their Big Sister, Cissy (kathy Garver)--container.