In 1984, a Russian research team goes below the surface to find out what secret the world's deepest borehole is hiding. On their expedition, something unexpectedly gruesome awaits the researchers.

• TrioFilm
• SSB Films
• Milena Radulović
• Sergey Ivanuk
• Nicholay Kovbas
• Nikita Dyuvbanov
• Vadim Demchog
• Albina Chaykina
• Kirill Kovbas
• Victor Nizovoy