Lamb, primarily based on the novel by Bonnie Nadzam, traces the self-discovery of David Lamb within the weeks following the disintegration of his marriage and the dying of his father. Hoping to regain some religion in his personal goodness, he turns his consideration to Tommie, a clumsy and unpopular eleven-year-old lady. Lamb is satisfied that he may help her keep away from a future of apathy and vacancy, and takes Tommie for a highway journey from Chicago to the Rockies, planning to provoke her into the fantastic thing about the mountain wilderness. The journey shakes them in methods neither expects.