Simon loves to scare Stella Rosa, especially with his stories. Most of the time Stella Rosa can cope but now her grandmother, Nana Lupin, is coming to visit from a far-away country and Simon whispers that Nana Lupin is a Were-Nana ...and Stella Rosa believes him. The darkly robed figure that comes through the arrival gate at the airport does look like a Were-Nana after all...and Stella Rosa is afraid because she hasn't been given the special potion that Simon says she should have drunk to protect her!