What a path has been taken since that quiet day when Lanfeust's powerful powers were revealed to him. At the end of the previous episode, he was in very bad posture. Hebus the troll plunges to his rescue in the icy waters of the far north. Will they ever find the City of Ice where a guide had to appear to them to lead them to their ultimate goal, the mythical Magohamoth? Meanwhile in the city of Eckmül, the invincible Thanos strengthens his domination. All the wise are neutralized and the inhabitants, deprived of magic. But the resistance is organized, led by the intrepid Dark Shadow. In this penultimate episode of the series, winks and jokes follow the whirlling rhythm of the adventures of this friendly team.