The city of Mare-is is a popular tourist spot, especially since it is the home to the esteemed legacy of the Count of Monte Colto, believed to have been made from the burning desire for revenge against those that wronged him. However, when a priceless treasure belonging to the legacy was stolen and the family was attacked on the new Countess's wedding day, she vows revenge against the thief that caused it.

Meanwhile, Daring Do is alerted to the potential crisis when an old friend, a minstrel named Night Serenade, comes into her life once more and tells her of a letter requesting her presence at the city of Mare-is. She plans to go alone, but is forced to take Night Serenade with her at his request. Can the two find the priceless treasure in time or will they succumb to the wrath of the Countess of Monte Colto?