Samantha goes home to help her love struck sister, Emily, during the holidays. She discovers that Emily and Tony can not be together unless Samantha attracts and dates the unpleasant Parker Williams, an owner of a competing winery.

After an earthquake leaves Danny trapped and alone, his claustrophobic nightmare only gets worse when something truly horrifying emerges from the fissures in the ground, forcing him to engage in a brutal fight for his life and his sanity.