Ursula, Michael and Tom are rescued by Tseringma, the world-weary, three thousand year old guardian of the cave, who tells them that global disbelief in magic has weakened its potency but is relieved to sacrifice herself in order to heal Tom, whom she sees as a future champion of all wizardry. Meanwhile Benny and Randal discover the magic triptych mirror, which will triple Randal's magic powers and, although they are captured by the Nekross, Randal's combined use of magic and science enables them to escape as well as saving Tom and his family from another Nekross encounter.
—don @ minifie-1