When psychic Clair does a tarot-card reading for doubting bride-to-be Rachel, it's the beginning of a bizarre adventure. Rachel leaves behind her engagement ring and her fiance Jake's business card, and Clair decides to take a pilgrimage to the Heron family winery to return the ring. Somehow she ends up agreeing to impersonate Rachel at a giant engagement party while simultaneously trying to get to the bottom of the strange circumstances that have driven Rachel away--and keep at bay her lust for Jake's best man, Mike.