Kristina lives with Vitaly in a quiet family life, but her sarcastic world view does not coincide with Vitaly’s ideals. While she is engaged in household chores, he spends more and more time at work, and Kristina begins to suspect that this is somehow connected with the appearance of his young assistant Sonya in the office.
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.
