The tragic death of Victoria turns the lives of the Mattew family and of Zoe and her friends' upside down. The young woman is destabilized by the more distant than ever behavior of Faïz who seems to have lost all humanity since the disappearance of her sister. David, for his part, succeeds in translating part of the coded message of the Callis. This discovery projects the protagonists in an adventure where they have to face enemies as dangerous as evil.