An SOS signal transmitted over a walkie-talkie changes the life of a modest shirt seller, Alex, forever. Following a call for help, he goes to a house on the top of a mountain and... finds himself the main character in a criminal story, the roots of which go back to the distant past. At one time, the murder of ten Alpine shooters remained unsolved; will answers be found now? This is what the new captive of Leviathan, wandering in the labyrinths of someone else’s and his own subconscious, has to find out. Cold and darkness are his only companions; everyone who could shed light on what happened is dead. But sometimes the dead break their vow of silence...