Holly and Gerry were childhood sweethearts-soulmates. And then the unthinkable happens. Gerry's death devastates Holly. But as her 30th birthday looms, Gerry comes back to her, leaving her a bundle of notes signed 'PS, I Love You'. One for each month of the year. The man who knows her better than anyone is set out to teach her that life goes on.

With the help of her friends and family, Holly finds herself laughing, crying, singing, and dancing-life is for living, she's realizing-and it helps if there's an angel watching over you.