The depths of the oceans and seas are treacherous. But people have forgotten this simple truth. Having conquered the steam, they decided to step further, touch the secrets of the underwater labyrinths, and subjugate the power of the ancient people - the Ichthyans. A dangerous game turns into a real dizzying journey. Only there will be no winners and losers, because there are no clear rules. And sea spirits will cease to be mere sounds and will demonstrate to people the true power of the Underdark.