Biology professor Andy Waite is finally beginning to pick up the pieces years after a drunk driver killed his wife. Between finishing his research and taking care of his young daughters, he has reasons to get through the day, and most days he does without falling apart. That is, until a young female student enters his life and turns it upside down.Melissa Potter is a passionate evangelist hoping to write the definitive paper about Creationism. She makes Andy's Darwinian certainty-and his grief-a personal challenge. As she chips away at his committed atheism, he begins to realize the emptiness that he's been living with for too long. But when the relationship turns romantic, the boundaries he's worked so hard to maintain-personally and professionally-start to blur, and soon it's unclear what kind of deliverance he really needs.