Tomlin and Fonda co-starred in the revenge comedy 9 to 5 and the Netflix series Grace and Frankie. Weitz directed Tomlin in the 2015 Sundance hit Grandma.
Richard Roundtree also stars as a love interest to Fonda's character.
Fonda and Tomlin also co-star in the upcoming film 80 for Brady. Fonda has the sequel Book Club 2: The Next Chapter and Tomlin has The Road Home set for release next year.
Fonda, Tomlin and Parton were developing a 9 to 5 sequel but that project is no longer in the works.