Thirty years into a loving, committed marriage, Lyle (Parnell) and Holly (Buono) begin to wonder if they played life too safe once she’s diagnosed with terminal cancer. As they both grapple with the fact that Holly has never been romantically involved with anyone other than her husband, the two decide to test the boundaries of love, and Holly is encouraged to explore intimacy with another man. After a flirtation arises between Holly and their charismatic rockstar neighbor Hoyt (Haysbert), this unconventional love triangle soon attracts Holly’s hilariously quirky best friend, Ethel (Douglas), and has surprising ramifications for the married couple’s rebellious Gen-Z daughter Greta (Shields). As they all navigate this uncharted romantic scenario, boundaries are blurred as love is put to the ultimate test.