It is 1792 and Nathaniel Drinkwater is back in the Royal Navy, this time appointed to the 12-gun cutter Kestrel, commanded by the inscrutable Madoc Griffiths. With the gathering menace of the French Revolution, he is involved in secret and dangerous operations off the French Coast, including the rescue of émigrés and the landing of agents.
As Europe plunges deeper into war, Kestrel takes part in the struggle for supremacy in the Channel and Drinkwater has some sinister encounters with Edouard Santhonax, a man who is stirring up interest with British government agents.
Through Drinkwater's initiative the network of intrigue is discovered, but the Royal Navy is paralyzed by mutiny. Will Kestrel have to stand alone between the Dutch Fleet and disaster? Events come to a climax at Camperdown, and in the aftermath of the bloody battle Drinkwater and his opponent come face to face.