Luca is astonished to see his room turning into a white cloud. He witnesses a council of witches around their bonfire. They are sisters, and their brother, Raging Wind, has disappeared. By magic spells, they find out that only a very young boy can find and rescue their brother. And that boy is... Luca himself.
This is how a series of amazing adventures begins. Luca does find and save Raving Wind, but he also needs to find his father, whom everybody supposes dead. Luca intuitively knows his father is still alive and unable to come back home.