When her husband John, the love of her life, passed away, Mabel Dixon felt as though her life was over. Now, thirteen months later, she has sold their house, purchased an apartment, and has reluctantly opened a new chapter in her life at what was promised to be the ultimate in senior living.

Still grieving, hopelessly depressed, and surrounded by old people, Mabel is trying to come to terms with aging and her new environment when she is befriended by Gladys Sorensen, who might just be the craziest old lady she has ever met. Through their newfound friendship, Mabel gradually begins to discover joy in her surroundings and starts to adapt to her new lifestyle.

Mabel and Gladys are a perfect match. They spend countless hours together, finding more joy in each other's company than Mabel ever thought possible at her age. With Gladys's carefree, fun-loving, and mischievous spirit, it was only a matter of time before they found themselves caught up in an adventure. That moment arrives when Mabel opens a belated sympathy card from a man who claims to have worked with her husband and begins corresponding with him.