The novel is set in the reign of "old King Henry VI" (1422-1461, 1470-1471) and during the Wars of the Roses (1455-1487). The story begins with the Tunstall Moat House alarm bell, rung to summon recruits for its absent lord Sir Daniel Brackley, to join the Battle of Risingham; at which the outlaw "fellowship" known as "the Black Arrow" begins to strike with its "four black arrows" for the "four black hearts" of Brackley and three of his retainers: Nicholas Appleyard, Bennet Hatch, and Sir Oliver Oates, the parson.