Will Barrett of Linwood, North Carolina, is a depressed widower with a peculiar tendency to fall down in strange places. Allison, the girl in the greenhouse, has just escaped from a mental institution and is working hard to make a new life for herself. When their paths cross in a most unusual manner, a relationship begins that will help restore two struggling outcasts to new life.

What follows is by turns touching and zany, tragic and comic, as Will undertakes his own Pascalian wager in search of proof of the existence of God. Leaving his comfortable home atop a pleasant Carolina mountain and descending deep into the bowels of the long-unused Lost Cove cave, he is prepared to wait for a sign—which may, of course, be death. What he is not prepared for is what actually happens.