Wow! Looks like Step into the Abyss is not available on any streaming services in the world!

Genre

The main character of the picture - military scientist Major Kovpaev Sergey Alexandrovich is working on a secret government project codenamed "Cerebrum". He is so passionate about his research that he does not notice how from year to year he is moving more and more away from his family, bringing work to the fore. By a tragic coincidence, Sergei's family gets into a car accident, during which both of his sons are killed, and his wife is in critical condition in intensive care. Realizing the depth of his loss and blameing himself for what happened, the protagonist decides to take advantage of the ghostly opportunity to realize the results of his ten-year research.