In September 1800 Richard Bolitho, a freshly appointed rear-admiral, assumes command of his own squadron - but, as the cruel demands of war spread from Europe to the Baltic, he soon realizes that his experience, gained in the line of battle, has ill-prepared him for the intricate manoeuvring of power politics. Under his flag the Inshore Squadron has to ride out the bitter hardship of blockade duty and the swift, deadly encounters with the enemy. An old hatred steps from the past to pose a personal threat to him, but at the gates of Copenhagen, where his flag flies admidst the fury of battle, Bolitho must put all private hopes and fears behind him.