Shortly after having Moriarty and his accomplices arrested, the Monster's Antigang barely has time to arrest a monster "businessman" when another big problem looms. This time, a scientist with knowledge of the paranormal named Alexander Zorka calls on Lucas, with whom he has collaborated in the past, in order to reach an island lost in the mist in the depths of the Pacific, not found on any map, in order to eliminate a serious threat. However, two problems loom once there for the Antigang, in reality the island is none other than a gigantic one hundred-headed monster, Ladon, on which the rest of his family, the children of Echidna and Typhon, live, and above all : Zorka is the real antagonist ! In reality, with his accomplices, he wants the power of the all-powerful Typhon, prisoner of the Old Gods for a long time, in order to use it to destroy all the "enemies of humanity". Via Gloria, the Antigang will understand that Echidna and her children are not monsters, being people who only want to live in peace. Thus, by allying themselves with them, our heroes will confront Zorka, who is in reality an immortal of several centuries, and allow a family to be recomposed for the first time in millennia !
