The magic has been unleashed. The Magitorium has been saved. But the greatest secret of magic is still hidden...

Best friends, a magical key, and a talking cat as a companion - Lenna finally feels at home in the new city. Just like in the Magitorium with all its spells. But suddenly, the Magitorium receives a distress call from an unknown Key Keeper, and a simple rescue mission turns into a new threat! Someone from the past is searching for a dangerous artifact. Suddenly, Lenna, Rudi, Kimie, and Pirro find themselves in a trial that not only determines their fate as guardians but is also linked to a great secret. And the long-hidden truth may be even more dangerous than their enemy...

Breathless tension, an ancient secret, new magical locations: Tanja Voosen unleashes another magical adventure with the second volume of The Guardians of the Whispering Keys!.