Plymouth 1774. Richard Bolitho is now a newly appointed third lieutenant joining the 28-gun frigate Destiny. It is a far step from midshipman's berth to wardroom - and Bolitho must come to understand that his loyalty is to his captain, his ship and His Britannic Majesty.
Despatched on a secret mission, Destiny and her company face the hazards of conspiracy, treason and piracy. It is amidst the broadside battles at sea and the clash of swords that Bolitho learns to accept his new responsibilities as a King's officer.