The adventures of the Boarder family continue...
The disadvantage of inheriting a considerable estate by an illegal trick is it puts the family of Mr. North at a disadvantage when someone tries to present a fraudulent will claiming half of that estate.
Timothy, the Duke of Trolenfield, and his new wife, Millicent (the sometimes "Mr. North"), depart to investigate the claim leaving the ladies of the Boarder family in Bath to enjoy themselves. Two single ladies, one seeking adventure, the other seeking security, are left unsupervised.
You know that can't end well.