Having suffered a fatal heart attack on the eve of her adoring granddaughter's eleventh birthday, a devoted grandmother wages a valiant fight in heaven to return to Earth one last time and celebrate alongside the little girl she loves most. Sarah Miller (Florence Henderson) adores her ten year old granddaughter Katie (Stephanie Patton), and the feeling is most certainly mutual. At the moment Katie is planning her eleventh birthday party, an event that Sarah claims she wouldn't miss for the world. But when Sarah drops dead of a heart attack just before the party and finds herself ascending to heaven, her only thought is how disappointed her granddaughter will be if her "Nanny" isn't there to share in the delicious cake and memorable moments. Sarah isn't particularly religious, though her heavenly guide Ashley (Yanni King) vows to do everything within his power to help secure the skeptical newcomer a short reprieve from death so she can attend the upcoming party. Meanwhile, down on Earth, Katie has an unexpectedly severe reaction to the news of her grandmother's passing. As the day of the party arrives, Sarah is still in a bureaucratic nightmare of cosmic proportions. The paperwork required for her return to Earth is taking forever to fill out, and as she races to ensure that every signature is in place Katie collapses in agony. Just as Katie is being rushed to the hospital, however, Sarah secures her passage to Earth and makes good on her promise to attend at the party. Upon returning to heaven, however, Sarah witnesses a sight that prompts her to pray as never before.