In the tumultuous spring of 1968 a young English woman, Rose, travels from London to the United States to meet a man she knows as Washington Harold. In her suitcase are a polka dot dress and a one-way ticket. In an America recently convulsed by the April assassination of Martin Luther King and subsequent urban riots, they begin a search for the charismatic and elusive Dr. Wheeler- sage, prophet and, possibly, redeemer-who rescued Rose from a dreadful childhood and against whom Harold holds a seething grudge.As they follow their quarry cross-country in a camper they encounter the odd remnants of Wheeler acolytes who harbor festering cultural and political grievances. Along the way, a famous artist is shot in New York, mutilated soldiers are evacuated from Vietnam, race hatred explodes in ghettos and suburbs and casual madness blossoms at revival meetings.