The ensemble and the three main characters are introduced during the surreal prologue: Finn McCool (a non-dancing role played by Tony Kemp), high king of Ireland; Diarmuid (Colin Dunne), captain of the Fianna—Finn's army; and Grania (Jean Butler), Finn's betrothed. The scene fades away and the prologue breaks open into the Court of Finn McCool, where Diarmuid is displayed as the best soldier at court and Finn's devoted and trusted servant. Soon afterwards Grania arrives and is introduced to her fiancé for the first time. Finn welcomes her and presents her with four bodyguards sworn to protect her.