_**Herbie’s back**_ Tennessee Steinmetz’ aunt (Helen Hayes) is the new owner of Herbie and lives in a firehouse in San Francisco. A notorious real estate magnate (Keenan Wynn) wants her property to build a huge complex, but she won’t sell. When he sends his green lawyer nephew (Ken Berry) to persuade her, the nephew meets her displaced neighbor (Stefanie Powers) and changes sides. Can Herbie & ...

Helen Hayes is the single-minded "Mrs. Steinmetz". She is determined not to be forced from her alleged "firetrap" home by the mall-building millionaire "Hawk" (Keenan Wynn). Luckily she has "Nicole" (Stefanie Powers) to help out - and she proves especially useful when "Hawk" sends his gullible nephew "Willoughby" (Ken Berry) to try and charm the old woman from her home. Now she is the aunt of "Ten...