It's the debate of the ages; this time, held in a seemingly insignificant venue, but the outcome, as always, will be life-changing. A Christian college freshman, Josh Wheaton, and his atheist philosophy professor hold court on the existence of God. To pass the course, Josh must prove to the class that God is alive and well. This dare could cost him his relationships, his career, even his future, but Josh stands up for his faith and takes on the challenge....

Lawrence Wetherhold is a recently widowed literature professor who is a numb and chilly intellectual. He rebuffs his students, ignores his own teenage children, James and Vanessa, and spurns cries for financial assistance from his ne'er-do-well but rather soulful adopted brother, Chuck. After an accident and Lawrence goes to the hospital, he is deprived of the right to drive. Janet is a physician and former student of Lawrence who remembers her disappointment...