The main character of the first three films, Tambrey "Tammy" Tyree, is portrayed as a kind and friendly country girl who finds romantic love.
When Grandpa is arrested for making moonshine liquor Tammy and her pet goat, Nan, go to live at Brentwood Hall.
She is sent to be a companion/caregiver to rich widow Annie Rook Call, (Beulah Bondi) but the lady ends up moving into Tammy’s houseboat, and she remembers living on her uncle’s shanty-boat.
Call (Beulah Bondi) needs medical treatment in California[7] Tammy (Sandra Dee) goes with her, becomes a nurse’s aide, and is wooed by a doctor (Peter Fonda).
Tammy Tarleton (Debbie Watson) had been raised on a houseboat by her grandpa (Denver Pyle) and Uncle Lucius (Frank McGrath) before being hired as a secretary for wealthy John Brent (Donald Woods).