This is a nature documentary, which leads us into the fascinating world of deep mountain lakes. We conquer ice palaces of unsuspected beauty. In the freezers, in which elves, fairies and mountain trolls once did their mischief, we move, using a special breathing technique and with special cameras in search of nocturnal hunters, whose eyes are equipped with residual light amplifying receptors. A nature documentary, recorded in 2k-cinema format with precision cameras, such as super slow motion, time lapse, residual light and remote-controlled cams.