A detective story about a difficult moral choice - if you can not save everyone at once, how to decide who to save in the first place?According to statistics, 20% of passengers manage to avoid death in disasters They are late for a flight or at the last minute refuse to travel...Increase the number of lucky people the task facing the developers of a new computer program They are close to solving it, but do not yet realize that they have already opened the hunt ... In the accident killed computer scientist Kirill Stanov . His death looks like a ridiculous accident, but colleagues of the deceased doubt it. Recently, Stanov worked on a unique program “Angel”, designed to identify planned disasters and thereby prevent the death of people with high IQ. Thanks to the new technology, those whose lives were supposed to be tragically cut short due to an accident would simply be late for their plane or train. His father's case is continued by his son Pavel . However, the young man is primarily interested in who is behind the murder of Stanov Sr. During the next tests of the program, Pavel meets people who know what really happened. The young man decides to avenge the death of his father, not yet assuming what a dangerous game involves his unknown opponent.