When Eric learns that the weather in Hollow has been acting strangely, he returns to the magical town to help his friends with the danger they might face soon.
Eric and his friends have to understand what is wrong with the weather and why the boys are getting paler day by day. Could the truth be hidden in the dark depths of the cave? And what is hidden inside the fountain on the square?
To solve the Fountain Riddle, Eric and his friends will have to fight the Pied Piper and his rats, visit a 19th century ball, and catch the boy in the painting.
