Where is the line between Good and Evil? Is it always possible to carry it out? For the benefit and prosperity of mortals, the good gods created the Grail - a sacred vessel filled with inescapable happiness. But Fate decided otherwise. The medieval magician Kaldorian, whether through malice or thoughtlessness, stole the magic cup from the hands of the guardians and plunged Old Earth into the abyss of suffering, dooming generations of its inhabitants to torment... But what one destroyed, another can recreate. Five noble Wanderers go back to the past in order to correct the evil mistake of Fate. But who will correct the mistakes of the Wanderers? Well, of course they are, the Mercenaries of Doom—they’re no strangers to saving worlds! One thing is bad - they had completely different plans for this summer...