Lady Regina will soon turn thirty, and her future is bleak in both cases - both in the case of the life of an old maid, and in the case of an arranged marriage to a count who is only interested in her estate. After reflection, she makes a decision: before bury yourself in a dull marriage, at least once feel what real passion is. It is even more difficult to find a more suitable candidate for the role of a secret lover than the handsome Daffin Oakleaf, a detective from Bow Street. And the perfect opportunity arises - someone begins to threaten Regina, and Daffin is forced to act as her bodyguard... Days turn to days. Regina and Duffin become closer and closer to each other, and soon they both realize that this is love. However, the brave detective does not rush into the laid nets of temptation...