After the defeat of the vengeful Ghost Witch last year, Miranda Stellarbent, the Sorceress of the Isle, tries to enjoy the newfound peace with her friends. Meanwhile, Sir Marcus crosses the sea to find out what exactly is causing a mysterious fog to rise from the ancient ruins of Vimlan, a long abandoned country. In addition to this, Prince Andre is inexplicably missing. When Sir Marcus never returns from his expedition, Miranda finds a message in his empty boat from the previously unheard-of Firewitch, and she must cross the sea herself to find out who the Firewitch is, and why the Isle is under attack.