A dedicated nurse, Stella finds comfort at the hospice where she works the late shift, especially since her husband returned from Afghanistan—cold, distant, and shattered by painful memories he refuses to share. The hospice at night is another world, where the dying receive closure by creating the letters that Stella helps them write. The pages are filled with love and humor, sometimes regret, and, occasionally, even instructions for a perplexed husband on how to run appliances. There's one rule: The letters are mailed only after the patient has passed.

Suddenly Stella is faced with a dilemma: A woman under her care, Grace, has written a confession to the son she abandoned many years before. The letter clearly needs to be read before Grace dies. But if Stella mails it now, she breaks the rule—and risks tampering not only with Grace's wishes but also with fate.

Navigating passion and grief, loyalty and loss, and a marriage threatened by silence and secrets, Stella discovers that letters hold a special power: granting solace, saving memories, nurturing relationships. As the words endure, love redeems.