The medallion has found the one it seeks. In Italy to attend a family wedding, Paige, Dane, and Jack's final time trip takes them to a waiting Varteni, who is living in Herculaneum in the path of an already rumbling Mt. Vesuvius. But getting Varteni and her two young charges to safety is the least of their worries. They're not the only ones to have finally located her. Their nemesis, Khatcheres, has too, and is preparing to move against her and seize control of Time. To defeat him, the Line of the Restorer must unite and call upon every resource available.