The new school year is going to be very entertaining! The Gang decides to investigate the history of Villa ARI-ADNE, an old mansion that was the centre of the town a hundred years ago, which legend has it is enchanted. Once inside they’ll find even more surprises than they were expecting, some of them terrifying and suspiciously related to Carla and Marla. But Marc’s genius and help from unexpected quarters will see the Gang win out in the mansion!