
Following the brave divers who journey to the depths of the Baltic Sea to uncover its hidden war stories.

Within sight of Rügen, the Baltic Sea divers drop anchor to salvage lost plastic "ghost nets," which can prove deadly traps for sea creatures; diver Erik acts cautiously around the wreck of the fishing cutter Friedrich Engels that sank in 1973.

The BT2 explores Danish territorial waters with the help of the VALOR, an advanced Remotely Operated Vehicle; the device possesses first-class sensors, high-resolution cameras and a system that enables live images transmission directly to land.