The year is 1976 and we are alive in an all-Catholic world. The Reformation never took place because Martin Luther made a deal with Rome and became Pope Martin I. The "alteration" proposed to Hubert Anvil, brilliant 10-year-old boy soprano, is that most feared by all males. Pope John XXIV wishes Hubert to preserve the purity of his voice to glorify the Church on a permanent basis; Hubert wishes to share his talent but he has some disquieting thoughts about Pope John's proposal.