Sadie and Ben are in love, and although Ben suggests getting married in the Caribbean, Sadie has her heart set on a wedding at the family church, St. Augustine's. Ben says sure, and they meet with the pastor, Rev. Frank. The only date open for two years is three weeks away, and Frank insists the kids go through his marriage prep course. They're to write their own vows; he also demands chastity, bugs their apartment, initiates arguments, has them care for robot twins, creates friction between Ben and her family, and raises doubts in Sadie. Desperate, Ben looks for dirt on Frank. Can he undermine Frank's authority and keep Sadie's heart?

In Los Angeles, Henry is a veterinarian whose fiancée Kate dies in an accident on the day they're to marry. Worried that Henry has closed off his social life, his sister suggests he use a psychic to contact Kate, lay to rest unresolved feelings, and live more fully. He tries it, though he doesn't believe in it. Nothing happens, so his sister gives Ashley, the psychic, Kate's diary. Now she's able to convince Henry she's in contact with Kate and start the therapy. Two things happen: they find themselves attracted to each other, and Kate's ghost, who also has some unresolved issues, returns to stop this budding romance.

Three mischievous employees of a bank in a small deserted town all make plans to rob at the same time...