Since ancient times, many peoples have lived on the lands of Tree Mountains: the Beregins, the Karls, the glorious people of the Commandments, the descendants of the ancient Aricheans. But besides these tribes, the vast spaces of Treemountain are inhabited by earthly sons - foresters and watermen, mermaids and mighty heroes. The gods and gods also did not leave these lands. The glorious prince of the Commandments Mithrapyrn plans a feast in honor of the Feast of Abundance, to which his subjects come. But no one yet knows that everyone is in danger - in the mountains, thanks to the efforts of an insidious and unknown enemy, a terrible fire-breathing snake has awakened. Three knights, led by Belenir, set off on a journey to save their land and their people from imminent death and gain glory and gold. How it will end is known only to the gods.