It was going to be a happy day for Kate Spencer (EVA LONGORIA PARKER) and Henry Miller (PAUL RUDD), but when an ice sculpture falls on her right before their wedding, she ends up in the hereafter where she misses some important information about her new role as a spirit.
A year later, Henry's sister, Chloe (LINDSAY SLOANE), is worried that the veterinarian hasn't moved on with his life. Accordingly, she drags him to see psychic Ashley (LAKE BELL), who also works as a caterer along with her gay assistant, Dan (JASON BIGGS). To help matters, Chloe secretly borrows Kate's diary and gives it to Ashley, in hopes that by reading it, she'll be able to make Henry believe she's talked to Kate and that it's okay for him to let go.
Ashley agrees because she thinks it will help, but she doesn't expect to end up falling for Henry. Dan doesn't think that's a good idea, but he's not the only one as Kate's spirit shows herself to Ashley, warning her to keep her distance. From that point on, Ashley must decide what to do, all as she and Henry become closer.