Sebastian, the Duke of Sandridge, discovers his cottage by the sea has been rented, he is disgruntled. His emotions are not elevated when he discovers his beloved cottage has been rented to a woman he despises.
Genevieve is new to Cornwall. After Genevieve's father encountered financial difficulties, her mother took Genevieve and her younger brother to Cornwall, the furthest point from the Lake District. When a grumpy duke wants to take the cottage away from Genevieve and her mother, Genevieve must hold on to it.
When Genevieve witnesses the duke have a diving mishap, she rescues him. Unfortunately, the duke has worn minimal clothing, and Genevieve might be in a compromising situation. Her mother quickly announces that Genevieve is married to this man. Will the duke ever remember that the woman he thinks he was married to was once his nemesis?