In The Three Weissmanns of Westport, Joseph, Betty Weissmann's husband of 48 years, has just left her for a younger co-worker. The younger co-worker covets the Weissmann's upper west side apartment, so Joseph manipulates it so that Betty moves temporarily to a cottage in Westport. She is joined there by her daughter Miranda, whose business as a literary agent has recently imploded due to her "Awful Authors" who have been found out writing fictitious memoirs. Also joining them is daughter Annie, who fights an uphill battle to keep the extravagant Betty and Miranda in check. Unlikely romantic entanglements ensue.